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href="/web/20210201103333/https://www.eso.org/public/copyright/"> Usage of ESO Images and Videos </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/images/archive/wallpapers/"> Wallpapers </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/images/archive/zoomable/"> Zoomable </a></li> </ul> </div> </div> </li> <li class="current"><a href="/web/20210201103333/https://www.eso.org/public/videos/">Videos<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1 current"> <ul id="submenu-aim-114" class="submenu-aim selected current current-leaf"> <li class=" current current-leaf"><a href="/web/20210201103333/https://www.eso.org/public/videos/search/"> Advanced Search </a></li><li class="submenu"><a class="no-link children" href="#"> Categories <span class="desktop-children topmenu-arrow fa 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Nebulae </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/paranal/"> Paranal </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/premises/"> Premises </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/blackholes/"> Quasars and Black Holes </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/solarsystem/"> Solar System </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/starclusters/"> Star Clusters </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/stars/"> Stars </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videos/archive/category/vnr/"> Video News Releases </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/copyright/"> Usage of ESO Videos and Images </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/videoformats/"> Video Formats </a></li> </ul> </div> </div> </li> <li><a href="/web/20210201103333/https://www.eso.org/public/news/">News<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-141" class="submenu-aim"> <li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/news/"> Press Releases <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-142" class="submenu-aim sublevel"><li class="submenu"><a class="no-link children" href="#"> 2021-2030 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa 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href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2016/"> 2016 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2015/"> 2015 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2014/"> 2014 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2013/"> 2013 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2012/"> 2012 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2011/"> 2011 </a></li></ul></li><li class="submenu"><a class="no-link children" href="#"> 2001–2010 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-156" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2010/"> 2010 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2009/"> 2009 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2008/"> 2008 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2007/"> 2007 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2006/"> 2006 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2005/"> 2005 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2004/"> 2004 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2003/"> 2003 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2002/"> 2002 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2001/"> 2001 </a></li></ul></li><li class="submenu"><a class="no-link children" href="#"> 1991–2000 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-167" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/2000/"> 2000 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1999/"> 1999 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1998/"> 1998 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1997/"> 1997 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1996/"> 1996 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1995/"> 1995 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1994/"> 1994 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1993/"> 1993 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1992/"> 1992 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1991/"> 1991 </a></li></ul></li><li class="submenu"><a class="no-link children" href="#"> 1985–1990 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-178" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/news/archive/year/1990/"> 1990 </a></li><li class=""><a 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href="/web/20210201103333/https://www.eso.org/public/teles-instr/">Telescopes & Instruments<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-244" class="submenu-aim"> <li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/"> Paranal Observatory <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-245" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/"> Very Large Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-246" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/"> VLT Instruments <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-247" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/4lgsf/"> 4LGSF </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/amber/"> AMBER </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/crires/"> CRIRES </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/espresso/"> ESPRESSO </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/eris/"> ERIS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/flames/"> FLAMES </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/fors/"> FORS1 and FORS2 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/gravity/"> GRAVITY </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/hawk-i/"> HAWK-I </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/isaac/"> ISAAC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/kmos/"> KMOS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/mad/"> MAD </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/matisse/"> MATISSE </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/midi/"> MIDI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/moons/"> MOONS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/muse/"> MUSE </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naco/"> NACO </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/naomi/"> NAOMI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/pionier/"> PIONIER </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sinfoni/"> SINFONI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/sphere/"> SPHERE </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/uves/"> UVES </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vimos/"> VIMOS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/visir/"> VISIR </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/x-shooter/"> X-shooter </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vtl-test-cameras/"> VLT Test Cameras </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-instr/vinci/"> VINCI </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/"> VLT Unit Telescopes Names <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-275" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/antu/"> Antu </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/kueyen/"> Kueyen </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/melipal/"> Melipal </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/vlt-names/yepun/"> Yepun </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/vlt/auxiliarytelescopes/"> Auxiliary Telescopes </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/"> Survey Telescopes <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-281" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/"> VISTA <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-282" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/mirror/"> The VISTA mirror </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/camera/"> VIRCAM </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/4most/"> 4MOST </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/surveys/"> The VISTA surveys </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vista/consortium/"> The VISTA consortium </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/"> VST <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-288" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/mirror/"> The VST mirrors </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/camera/"> OmegaCAM </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/surveytelescopes/vst/surveys/"> The VST surveys </a></li></ul></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/speculoos/"> SPECULOOS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/ngts/"> NGTS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/paranal-observatory/cta/"> Cherenkov Telescope Array </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/"> La Silla Observatory <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-295" class="submenu-aim sublevel"><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/swedish/"> Swedish–ESO Submillimetre Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-296" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/swedish/simba/"> SIMBA </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/"> New Technology Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-298" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/efosc2/"> EFOSC2 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/emmi/"> EMMI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/sofi/"> SOFI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/soxs/"> SOXS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/ntt/susi2/"> SUSI and SUSI2 </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/"> ESO 3.6-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-305" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/adonis/"> ADONIS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/caspec/"> CASPEC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/irspec/"> IRSPEC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/harps/"> HARPS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/mefos/"> MEFOS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/nirps/"> NIRPS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/optopus/"> OPTOPUS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/timmi2/"> TIMMI/2 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/36-infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/36-standard-photometer/"> Standard Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/infrared-specklegraph/"> Infrared Specklegraph </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/infrared-speckle-interferometer/"> Infrared Speckle Interferometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/36/efosc/"> EFOSC </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/"> MPG/ESO 2.2-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-319" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/feros/"> FEROS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/grond/"> GROND </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/irac2/"> IRAC & IRAC2 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/pisco/"> PISCO </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/wfi/"> WFI </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mpg22/infrared-photometer-spectrophotometer/"> Infrared Photometer/Spectrophotometer </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/swiss/"> Swiss 1.2-metre Leonhard Euler Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-326" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/swiss/coralie/"> CORALIE </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/rem/"> Rapid Eye Mount telescope </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/trappist/"> TRAnsiting Planets and PlanetesImals Small Telescope–South </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/"> Danish 1.54-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-330" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/coravel/"> CORAVEL </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/dfosc/"> DFOSC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/ccd/"> CCD camera </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/hb-photometer/"> Hβ Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/two-channel-photometer/"> Two-Channel Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/four-channel-photometer/"> Four-Channel Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish154/six-channel-photometer/"> Six-Channel uvby-Hβ Photometer </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/tarot/"> Télescope à Action Rapide pour les Objets Transitoires </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/1mschmidt/"> ESO 1-metre Schmidt telescope </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/152metre/"> ESO 1.52-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-340" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/152metre/bandc/"> Boller and Chivens Spectrograph </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/152metre/coude/"> Coudé Spectrograph </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/152metre/echelec/"> ECHELEC </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/152metre/rv-cass-spectrograph/"> RV Cass Spectrograph </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/1metre/"> ESO 1-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-345" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/1metre/fideos/"> FIDEOS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/1metre/infrared-photometer/"> Infrared Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/1metre/single-channel-photometer/"> Single-Channel Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/05metre/"> ESO 0.5-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-349" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/05metre/single-channel-photometer/"> Single-Channel Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/05metre/double-channel-photometer/"> Double-Channel Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/coude/"> Coudé Auxiliary Telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-352" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/coude/ces/"> CES </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/marly/"> MarLy 1-metre telescope </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/09metre/"> Dutch 0.9-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-355" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/09metre/walraven/"> Walraven Photometer </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/t70/"> Swiss T70 telescope </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/bochum/"> Bochum 0.61-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-358" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-scanner/"> Bochum Scanner </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/bochum/bochum-photometer/"> Bochum Photometer </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish05/"> Danish 0.5-metre telescope <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-361" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-two-channel-hb-photometer/"> Two-Channel Hβ Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-four-channel-uvby-photometer/"> Four-Channel uvby Photometer </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/danish05/danish-six-channel-uvby-hb-photometer/"> Six-Channel uvby–Hβ Photometer </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/gpo/"> Grand Prisme Objectif telescope </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/swiss04/"> Swiss 0.4-metre telescope </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/marseille/"> Marseille 0.36-metre telescope </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/grb/"> GRB Monitoring System </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/mascara/"> MASCARA </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/blackgem/"> BlackGEM </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/extra/"> ExTrA </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/lasilla/test-bed/"> Test-Bed Telescope </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/"> APEX <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-373" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/artemis/"> ArTéMiS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/laboca/"> LABOCA </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/saboca/"> SABOCA </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/sepia/"> SEPIA </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/apex-2a/"> APEX–2A </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/aszca/"> ASZCa </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/champ-plus/"> CHAMP+ </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/flash/"> FLASH </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/flash-plus/"> FLASH+ </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/mpi_11thz/"> MPI_1.1THz </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/p-artemis/"> P-ArTéMiS </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/pi230/"> PI230 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/polka/"> PolKa </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/apex/shefi/"> SHeFI </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/"> ALMA <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-388" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/antennas/"> Antennas </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/transporters/"> Transporters </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/receiver-bands/"> Receiver Bands </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/alma/residencia/"> ALMA Residencia </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/elt/"> ELT </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/"> Technology for Telescopes <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-395" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/active_optics/"> Active Optics </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/adaptive_optics/"> Adaptive Optics </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/ifu/"> Integral Field Units </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/interferometry/"> Interferometry </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/technology/spectroscopy/"> Spectroscopy </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/teles-instr/instruments/"> Instruments </a></li> </ul> </div> </div> </li> <li><a href="/web/20210201103333/https://www.eso.org/public/science/">Discoveries<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-402" class="submenu-aim"> <li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/top10/"> ESO Top 10 Astronomical Discoveries </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/exoplanets/"> Exoplanets </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/gravitationalwaves/"> Gravitational Wave Sources </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/gc/"> Black Hole at the Centre of our Galaxy </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/grb/"> Gamma-Ray Bursts </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/science/archive/"> Science Archive </a></li> </ul> </div> </div> </li> <li><a href="/web/20210201103333/https://www.eso.org/public/events/">Events<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-409" class="submenu-aim"> <li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/press-evt/"> Press Events </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/"> Special Events <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-411" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/announcements/ann18065/"> Open House Day 2018 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/asteroid-day/"> Asteroid Day </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse17/"> Open House Day 2017 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/announcements/ann16071/"> Open House Day 2016 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/MeetESO/"> #MeetESO </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse15/"> Long Night of Science 2015 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2014/"> ASTRONET 2014 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse14/"> Open House Day 2014 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/eeltblast/"> ELT Groundbreaking </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/cafe-and-kosmos/"> Café & Kosmos in Munich </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse13/"> Open House Day 2013 </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/"> ASTRONET 2013 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-423" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/dates/"> Important Dates </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/registration/"> Registration, Fees and Payment </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/abstracts/"> Abstract Submission </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/venue/"> Workshop Venue </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/astronet2013/practical_information/"> 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href="/web/20210201103333/https://www.eso.org/public/events/special-evt/awesome-universe/organisers/"> For Exhibitors </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/iya2009/"> IYA 2009 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/100ha/"> 100 Hours of Astronomy </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/theeye/"> The Eye 3D </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/imax-hidden-universe/"> IMAX® 3D Film Hidden Universe </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse11/"> Open House Day 2011 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse09/"> Open House Day 2009 (German) </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/bond/"> Bond at Paranal </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/lndw-2007eng/"> Long Night of Science 2007 </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse/"> Open House Day 2006 <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-461" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse/ohd06-winnerslist/"> List of Prize Winners </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse/tdot06/"> Deutsche Fassung </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/openhouse/tdot06-gewinnerliste/"> Liste der Preisgewinner </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/pt-011203/"> Public Talks 2003 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/special-evt/eso40years/"> ESO 40 Years (1962 - 2002) </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/events/exhibitions/"> Exhibitions <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-467" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/exhibitions/perma_exhibitions/"> ESO Permanent Exhibitions </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.esof.eu/"> EuroScience Open Forum (ESOF) </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://eas.unige.ch/EWASS2016/"> EWASS 2016 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/https://aas.org/meetings/aas227"> AAS Winter 2016 </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/"> Astronomical Events <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-472" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/solareclipse2019/"> Total Solar Eclipse 2019 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/mcnaught2007/"> The Comet McNaught 2007 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/deepimpact/"> Deep Impact - 04.07.2005 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.vt-2004.org/"> The Venus Transit - 08.11.2004 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/leonids99/"> The Leonids - 17.11.1999 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/eclipse99/"> Solar Eclipse at ESO HQ - 11.08.1999 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/leonids98/"> The Leonids - 11.1998 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/pathfinder/"> Mars Pathfinder - 1997 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/hyakutake/"> Comet Hyakutake - 1997 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/sl9/"> SL-9 and Jupiter - 1994 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/astro-evt/hale-bopp/"> Comet Hale Bopp - 1994 </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/events/seminars/"> Astronomy Communication Seminars </a></li> </ul> </div> </div> </li> <li><a href="/web/20210201103333/https://www.eso.org/public/outreach/">Outreach<span class="fa fa-angle-down level0-children-arrows"></span></a> <span class="mobile-children"> <span class="fa fa-angle-down"></span> </span> <div class="level1-wrapper"> <div class="level1"> <ul id="submenu-aim-485" class="submenu-aim"> <li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/"> Education <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-486" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/products/education/"> Educational Material </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.scienceinschool.org/" target="_blank"> Science in School </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.sterrenlab.com/camps/eso-astronomy-camp-2017/"> ESO Astronomy Camp 2017 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/https://web.archive.org/web/20190722044743/http://www.sterrenlab.com/camps/eso-astronomy-camp-2016/"> ESO Astronomy Camp 2016 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/https://web.archive.org/web/20190810160701/http://www.sterrenlab.com/camps/eso-astronomy-camp-2015/"> ESO Astronomy Camp 2015 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/https://web.archive.org/web/20190321214717/http://www.sterrenlab.com/camps/eso-astronomy-camp-2014/"> ESO Astronomy Camp 2014 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/teacherschools/"> Teacher Schools </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/prev-programmes/"> Previous Programmes <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-494" class="submenu-aim sublevel"><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.eaae-astronomy.org/catchastar/cas2013"> Catch a Star 2013 </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.eaae-astronomy.org/catchastar/cas2011"> Catch a Star 2011 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2008/"> Catch a Star 2008 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2007/"> Catch a Star 2007 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2005/"> Catch a Star 2005 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2004/"> Catch a Star 2004 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2003/"> Catch a Star 2003 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/cas/cas2002/"> Catch a Star 2002 </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/liu/"> Life in the Universe </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/pos/"> Physics On Stage </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/eduoff/seaspace/docs/"> Sea & Space </a></li></ul></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://kids.alma.cl/?lang=en"> ALMA Kids </a></li></ul></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/"> Partnerships <span 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href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/chile/2009/"> 2009 </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/eso-ambassadors/"> ESO Outreach Ambassadors </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/organisations/"> ESO Outreach Partner Organisations </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/educators/"> Informal Educators </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://eso.us2.list-manage1.com/subscribe?u=c35dd77ef962de779092c970b&id=bd58d6ae8d"> Outreach Newsletter Form </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/photo-ambassadors/"> ESO Photo Ambassadors </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/partnerships/music-ambassadors/"> ESO Music Ambassadors </a></li></ul></li><li class=""><a href="https://web.archive.org/web/20210201103333/https://www.eso.org/public/outreach/first-picture-of-a-black-hole/blog/"> Taking the First Picture of a Black Hole </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/communication-resources/"> Astronomy Communication Resources </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/gems/"> Cosmic Gems </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/social/"> Social Media </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/"> Ultra HD Expedition <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-523" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/team/"> Meet our Heroes </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/journey/"> Journey Schedule </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/equipment/"> Equipment </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/technology-partners/"> Technology Partners </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/ultra-high-definition/blog/"> Blog </a></li></ul></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/for_planetariums/"> For Planetariums </a></li><li class=""><a href="https://web.archive.org/web/20210201103333/http://www.eso.org/public/outreach/webcams/"> Webcams </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/your_eso_pictures/"> Your ESO Pictures </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/astroprize/"> European Astronomy Journalism Prize </a></li><li class="submenu"><a href="/web/20210201103333/https://www.eso.org/public/outreach/hiddentreasures/"> Hidden Treasures <span class="desktop-children topmenu-arrow fa fa-angle-right"></span></a><span class="mobile-children"><span class="fa fa-angle-down"></span></span><ul id="submenu-aim-533" class="submenu-aim sublevel"><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/hiddentreasures/rules/"> Hidden Treasures Rules </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/hiddentreasures/instructions/"> Hidden Treasures Instructions </a></li><li class=""><a href="/web/20210201103333/https://www.eso.org/public/outreach/hiddentreasures/science_archive/"> Hidden Treasures Form 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<option value="5">Full HD (1920x1080)</option> <option value="6">4K UHD (3840x2160)</option> <option value="7">Fulldome (4096x4096)</option> </select></td></tr> <tr><th><label for="id_ranking">Ranking:</label></th><td><select name="ranking" id="id_ranking"> <option value="0">All</option> <option value="80">Highest only</option> <option value="70">Good or better</option> <option value="40">Average or better</option> <option value="20">Fair or better</option> </select></td></tr> <tr class="searchitemsepr"><td colspan="3"><h2>Additional search terms</h2></td> <tr><th><label for="id_id">Image ID:</label></th><td><input type="text" name="id" id="id_id"/><br/><span class="helptext">Show only items with ID containing this string. e.g. heic1017</span></td></tr> <tr><th><label for="id_release_id">Release ID:</label></th><td><input type="text" name="release_id" id="id_release_id"/><br/><span class="helptext">Show only items containing references to Release IDs containing this string. e.g. heic1017</span></td></tr> <tr><th><label for="id_published_since_day">Published since:</label></th><td><select name="published_since_day" id="id_published_since_day"><option value="0">---</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option><option value="6">6</option><option value="7">7</option><option value="8">8</option><option value="9">9</option><option value="10">10</option><option value="11">11</option><option value="12">12</option><option value="13">13</option><option value="14">14</option><option value="15">15</option><option value="16">16</option><option value="17">17</option><option value="18">18</option><option value="19">19</option><option value="20">20</option><option value="21">21</option><option value="22">22</option><option value="23">23</option><option value="24">24</option><option value="25">25</option><option value="26">26</option><option value="27">27</option><option value="28">28</option><option value="29">29</option><option value="30">30</option><option value="31">31</option></select><select name="published_since_month" id="id_published_since_month"><option value="0">---</option><option value="1">January</option><option value="2">February</option><option value="3">March</option><option value="4">April</option><option value="5">May</option><option value="6">June</option><option value="7">July</option><option value="8">August</option><option value="9">September</option><option value="10">October</option><option value="11">November</option><option value="12">December</option></select><select name="published_since_year" id="id_published_since_year"><option value="0">---</option><option value="1984">1984</option><option value="1985">1985</option><option value="1986">1986</option><option value="1987">1987</option><option value="1988">1988</option><option value="1989">1989</option><option value="1990">1990</option><option value="1991">1991</option><option value="1992">1992</option><option value="1993">1993</option><option value="1994">1994</option><option value="1995">1995</option><option value="1996">1996</option><option value="1997">1997</option><option value="1998">1998</option><option value="1999">1999</option><option value="2000">2000</option><option value="2001">2001</option><option value="2002">2002</option><option value="2003">2003</option><option value="2004">2004</option><option value="2005">2005</option><option value="2006">2006</option><option value="2007">2007</option><option value="2008">2008</option><option value="2009">2009</option><option value="2010">2010</option><option value="2011">2011</option><option value="2012">2012</option><option value="2013">2013</option><option value="2014">2014</option><option value="2015">2015</option><option value="2016">2016</option><option value="2017">2017</option><option value="2018">2018</option><option value="2019">2019</option><option value="2020">2020</option><option value="2021">2021</option><option value="2022">2022</option></select></td></tr> <tr><th><label for="id_published_until_day">Published until:</label></th><td><select name="published_until_day" id="id_published_until_day"><option value="0">---</option><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option><option value="5">5</option><option value="6">6</option><option value="7">7</option><option value="8">8</option><option value="9">9</option><option value="10">10</option><option value="11">11</option><option value="12">12</option><option value="13">13</option><option value="14">14</option><option value="15">15</option><option value="16">16</option><option value="17">17</option><option value="18">18</option><option value="19">19</option><option value="20">20</option><option value="21">21</option><option value="22">22</option><option value="23">23</option><option value="24">24</option><option value="25">25</option><option value="26">26</option><option value="27">27</option><option value="28">28</option><option value="29">29</option><option value="30">30</option><option value="31">31</option></select><select name="published_until_month" id="id_published_until_month"><option value="0">---</option><option value="1">January</option><option value="2">February</option><option value="3">March</option><option value="4">April</option><option value="5">May</option><option value="6">June</option><option value="7">July</option><option value="8">August</option><option value="9">September</option><option value="10">October</option><option value="11">November</option><option value="12">December</option></select><select name="published_until_year" id="id_published_until_year"><option value="0">---</option><option value="1984">1984</option><option value="1985">1985</option><option value="1986">1986</option><option value="1987">1987</option><option value="1988">1988</option><option value="1989">1989</option><option value="1990">1990</option><option value="1991">1991</option><option value="1992">1992</option><option value="1993">1993</option><option value="1994">1994</option><option value="1995">1995</option><option value="1996">1996</option><option value="1997">1997</option><option value="1998">1998</option><option value="1999">1999</option><option value="2000">2000</option><option value="2001">2001</option><option value="2002">2002</option><option value="2003">2003</option><option value="2004">2004</option><option value="2005">2005</option><option value="2006">2006</option><option value="2007">2007</option><option value="2008">2008</option><option value="2009">2009</option><option value="2010">2010</option><option value="2011">2011</option><option value="2012">2012</option><option value="2013">2013</option><option value="2014">2014</option><option value="2015">2015</option><option value="2016">2016</option><option value="2017">2017</option><option value="2018">2018</option><option value="2019">2019</option><option value="2020">2020</option><option value="2021">2021</option><option value="2022">2022</option></select></td></tr> <tr><th><label for="id_title">Title:</label></th><td><input type="text" name="title" id="id_title"/></td></tr> <tr><th><label for="id_subject_name">Subject name:</label></th><td><input type="text" name="subject_name" id="id_subject_name"/><br/><span class="helptext">e.g. M 31</span></td></tr> <tr><th><label for="id_description">Description:</label></th><td><input type="text" name="description" id="id_description"/></td></tr> <tr><th><label for="id_credit">Credit:</label></th><td><input type="text" name="credit" id="id_credit"/></td></tr> <tr><th><label>Type:</label></th><td><ul id="id_type"> <li><label for="id_type_0"><input type="checkbox" name="type" value="Observation" id="id_type_0"/> Observation</label> </li> <li><label for="id_type_1"><input type="checkbox" name="type" value="Artwork" id="id_type_1"/> Artwork</label> </li> <li><label for="id_type_2"><input type="checkbox" name="type" value="Photographic" id="id_type_2"/> Photographic</label> </li> <li><label for="id_type_3"><input type="checkbox" name="type" value="Planetary" id="id_type_3"/> Planetary</label> </li> <li><label for="id_type_4"><input type="checkbox" name="type" value="Simulation" id="id_type_4"/> Simulation</label> </li> <li><label for="id_type_5"><input type="checkbox" name="type" value="Collage" id="id_type_5"/> Collage</label> </li> <li><label for="id_type_6"><input type="checkbox" name="type" value="Chart" id="id_type_6"/> Chart</label> </li> </ul><br/><span class="helptext">Leave unselected for all results.</span></td></tr> <tr><th><label for="id_category">Category:</label></th><td><select name="category" multiple="multiple" id="id_category"> <option value="1"> Solar System </option> <option value="2">Solar System : Planet</option> <option value="3">Solar System : Planet : Type : Terrestrial</option> <option value="4">Solar System : Planet : Type : Gas Giant</option> <option value="5">Solar System : Planet : Feature : Surface</option> <option value="6">Solar System : Planet : Feature : Surface : Mountain</option> <option value="7">Solar System : Planet : Feature : Surface : Canyon</option> <option value="8">Solar System : Planet : Feature : Surface : Volcanic</option> <option value="9">Solar System : Planet : Feature : Surface : Impact</option> <option value="10">Solar System : Planet : Feature : Surface : Erosion</option> <option value="11">Solar System : Planet : Feature : Surface : Liquid</option> <option value="12">Solar System : Planet : Feature : Surface : Ice</option> <option value="13">Solar System : Planet : Feature : Atmosphere</option> <option value="14">Solar System : Planet : Feature : Atmosphere : Cloud</option> <option value="15">Solar System : Planet : Feature : Atmosphere : Storm</option> <option value="16">Solar System : Planet : Feature : Atmosphere : Belt</option> <option value="17">Solar System : Planet : Feature : Atmosphere : Aurora</option> <option value="18">Solar System : Planet : Special Cases : Transiting</option> <option value="19">Solar System : Planet : Special Cases : Hot Jupiter</option> <option value="20">Solar System : Planet : Special Cases : Pulsar planet</option> <option value="21">Solar System : Planet : Satellite</option> <option value="22">Solar System : Planet : Satellite : Feature : Surface</option> <option value="23">Solar System : Planet : Satellite : Feature : Surface : Mountain</option> <option value="24">Solar System : Planet : Satellite : Feature : Surface : Canyon</option> <option value="25">Solar System : Planet : Satellite : Feature : Surface : Volcanic</option> <option value="26">Solar System : Planet : Satellite : Feature : Surface : Impact</option> <option value="27">Solar System : Planet : Satellite : Feature : Surface : Erosion</option> <option value="28">Solar System : Planet : Satellite : Feature : Surface : Liquid</option> <option value="29">Solar System : Planet : Satellite : Feature : Surface : Ice</option> <option value="30">Solar System : Planet : Satellite : Feature : Atmosphere</option> <option value="31">Solar System : Planet : Ring</option> <option value="32">Solar System : Interplanetary Body</option> <option value="33">Solar System : Interplanetary Body : Dwarf planet</option> <option value="34">Solar System : Interplanetary Body : Comet</option> <option value="35">Solar System : Interplanetary Body : Comet : Nucleus</option> <option value="36">Solar System : Interplanetary Body : Comet : Coma</option> <option value="37">Solar System : Interplanetary Body : Comet : Tail</option> <option value="38">Solar System : Interplanetary Body : Comet : Tail : Dust</option> <option value="39">Solar System : Interplanetary Body : Comet : Tail : Gas</option> <option value="40">Solar System : Interplanetary Body : Asteroid</option> <option value="41">Solar System : Interplanetary Body : Meteoroid</option> <option value="42">Solar System : Star</option> <option value="43">Solar System : Star : Evolutionary Stage : Protostar</option> <option value="44">Solar System : Star : Evolutionary Stage : Young Stellar Object</option> <option value="45">Solar System : Star : Evolutionary Stage : Main Sequence</option> <option value="46">Solar System : Star : Evolutionary Stage : Red Giant</option> <option value="47">Solar System : Star : Evolutionary Stage : Red Supergiant</option> <option value="48">Solar System : Star : Evolutionary Stage : Blue Supergiant</option> <option value="49">Solar System : Star : Evolutionary Stage : White Dwarf</option> <option value="50">Solar System : Star : Evolutionary Stage : Supernova</option> <option value="51">Solar System : Star : Evolutionary Stage : Neutron Star</option> <option value="52">Solar System : Star : Evolutionary Stage : Neutron Star : Pulsar</option> <option value="53">Solar System : Star : Evolutionary Stage : Neutron Star : Magnetar</option> <option value="54">Solar System : Star : Evolutionary Stage : Black Hole</option> <option value="55">Solar System : Star : Type : Variable</option> <option value="56">Solar System : Star : Type : Variable : Pulsating</option> <option value="57">Solar System : Star : Type : Variable : Irregular</option> <option value="58">Solar System : Star : Type : Variable : Eclipsing</option> <option value="59">Solar System : Star : Type : Variable : Flare Star</option> <option value="60">Solar System : Star : Type : Variable : Nova</option> <option value="61">Solar System : Star : Type : Variable : X-Ray Binary (Star)</option> <option value="62">Solar System : Star : Type : Carbon</option> <option value="63">Solar System : Star : Type : Brown Dwarf</option> <option value="64">Solar System : Star : Type : Wolf-Rayet</option> <option value="65">Solar System : Star : Type : Blue Straggler</option> <option value="66">Solar System : Star : Type : Exotic</option> <option value="67">Solar System : Star : Type : Exotic : X-Ray Binary</option> <option value="68">Solar System : Star : Spectral Type : O</option> <option value="69">Solar System : Star : Spectral Type : B</option> <option value="70">Solar System : Star : Spectral Type : A</option> <option value="71">Solar System : Star : Spectral Type : F</option> <option value="72">Solar System : Star : Spectral Type : G</option> <option value="73">Solar System : Star : Spectral Type : K</option> <option value="74">Solar System : Star : Spectral Type : M</option> <option value="75">Solar System : Star : Spectral Type : L</option> <option value="76">Solar System : Star : Spectral Type : T</option> <option value="77">Solar System : Star : Population : I</option> <option value="78">Solar System : Star : Population : II</option> <option value="79">Solar System : Star : Population : III</option> <option value="80">Solar System : Star : Feature : Photosphere</option> <option value="81">Solar System : Star : Feature : Photosphere : Granulation</option> <option value="82">Solar System : Star : Feature : Photosphere : Sunspot</option> <option value="83">Solar System : Star : Feature : Chromosphere</option> <option value="84">Solar System : Star : Feature : Chromosphere : Flare</option> <option value="85">Solar System : Star : Feature : Chromosphere : Facula</option> <option value="86">Solar System : Star : Feature : Corona</option> <option value="87">Solar System : Star : Feature : Corona : Prominence</option> <option value="88">Solar System : Star : Grouping : Binary</option> <option value="89">Solar System : Star : Grouping : Triple</option> <option value="90">Solar System : Star : Grouping : Multiple</option> <option value="91">Solar System : Star : Grouping : Cluster</option> <option value="92">Solar System : Star : Grouping : Cluster : Open</option> <option value="93">Solar System : Star : Grouping : Cluster : Globular</option> <option value="94">Solar System : Star : Circumstellar Material</option> <option value="95">Solar System : Star : Circumstellar Material : Planetary System</option> <option value="96">Solar System : Star : Circumstellar Material : Disk</option> <option value="97">Solar System : Star : Circumstellar Material : Disk : Protoplanetary</option> <option value="98">Solar System : Star : Circumstellar Material : Disk : Accretion</option> <option value="99">Solar System : Star : Circumstellar Material : Disk : Debris</option> <option value="100">Solar System : Star : Circumstellar Material : Outflow</option> <option value="101">Solar System : Star : Circumstellar Material : Outflow : Solar Wind</option> <option value="102">Solar System : Star : Circumstellar Material : Outflow : Coronal Mass Ejection</option> <option value="103">Solar System : Nebula</option> <option value="104">Solar System : Nebula : Type : Interstellar Medium</option> <option value="105">Solar System : Nebula : Type : Star Formation</option> <option value="106">Solar System : Nebula : Type : Planetary</option> <option value="107">Solar System : Nebula : Type : Supernova Remnant</option> <option value="108">Solar System : Nebula : Type : Jet</option> <option value="109">Solar System : Nebula : Appearance : Emission</option> <option value="110">Solar System : Nebula : Appearance : Emission : H II Region</option> <option value="111">Solar System : Nebula : Appearance : Reflection</option> <option value="112">Solar System : Nebula : Appearance : Reflection : Light Echo</option> <option value="113">Solar System : Nebula : Appearance : Dark</option> <option value="114">Solar System : Nebula : Appearance : Dark : Molecular Cloud</option> <option value="115">Solar System : Nebula : Appearance : Dark : Bok Globule</option> <option value="116">Solar System : Nebula : Appearance : Dark : Proplyd</option> <option value="117">Solar System : Galaxy</option> <option value="118">Solar System : Galaxy : Type : Spiral</option> <option value="119">Solar System : Galaxy : Type : Barred</option> <option value="120">Solar System : Galaxy : Type : Lenticular</option> <option value="121">Solar System : Galaxy : Type : Elliptical</option> <option value="122">Solar System : Galaxy : Type : Ring</option> <option value="123">Solar System : Galaxy : Type : Irregular</option> <option value="124">Solar System : Galaxy : Type : Interacting</option> <option value="125">Solar System : Galaxy : Type : Gravitationally Lensed</option> <option value="126">Solar System : Galaxy : Size : Giant</option> <option value="127">Solar System : Galaxy : Size : Dwarf</option> <option value="128">Solar System : Galaxy : Activity : Normal</option> <option value="129">Solar System : Galaxy : Activity : AGN</option> <option value="130">Solar System : Galaxy : Activity : AGN : Quasar</option> <option value="131">Solar System : Galaxy : Activity : AGN : Seyfert</option> <option value="132">Solar System : Galaxy : Activity : AGN : Blazar</option> <option value="133">Solar System : Galaxy : Activity : AGN : Liner</option> <option value="134">Solar System : Galaxy : Activity : Starburst</option> <option value="135">Solar System : Galaxy : Activity : Ultraluminous</option> <option value="136">Solar System : Galaxy : Component : Bulge</option> <option value="137">Solar System : Galaxy : Component : Bar</option> <option value="138">Solar System : Galaxy : Component : Disk</option> <option value="139">Solar System : Galaxy : Component : Halo</option> <option value="140">Solar System : Galaxy : Component : Ring</option> <option value="141">Solar System : Galaxy : Component : Central Black Hole</option> <option value="142">Solar System : Galaxy : Component : Spiral Arm</option> <option value="143">Solar System : Galaxy : Component : Dust Lane</option> <option value="144">Solar System : Galaxy : Component : Center/Core</option> <option value="145">Solar System : Galaxy : Grouping : Pair</option> <option value="146">Solar System : Galaxy : Grouping : Multiple</option> <option value="147">Solar System : Galaxy : Grouping : Cluster</option> <option value="148">Solar System : Galaxy : Grouping : Supercluster</option> <option value="149">Solar System : Cosmology</option> <option value="150">Solar System : Cosmology : Morphology : Deep Field</option> <option value="151">Solar System : Cosmology : Morphology : Large-Scale Structure</option> <option value="152">Solar System : Cosmology : Morphology : Cosmic Background</option> <option value="153">Solar System : Cosmology : Phenomenon : Lensing</option> <option value="154">Solar System : Cosmology : Phenomenon : Gamma Ray Burst</option> <option value="155">Solar System : Cosmology : Phenomenon : Dark Matter</option> <option value="156">Solar System : Sky Phenomenon</option> <option value="157">Solar System : Sky Phenomenon : Night Sky</option> <option value="158">Solar System : Sky Phenomenon : Night Sky : Constellation</option> <option value="159">Solar System : Sky Phenomenon : Night Sky : Asterism</option> <option value="160">Solar System : Sky Phenomenon : Night Sky : Milky Way</option> <option value="161">Solar System : Sky Phenomenon : Night Sky : Trail</option> <option value="162">Solar System : Sky Phenomenon : Night Sky : Trail : Meteor</option> <option value="163">Solar System : Sky Phenomenon : Night Sky : Trail : Star</option> <option value="164">Solar System : Sky Phenomenon : Night Sky : Trail : Satellite</option> <option value="165">Solar System : Sky Phenomenon : Night Sky : Zodiacal Light</option> <option value="166">Solar System : Sky Phenomenon : Night Sky : Zodiacal Light : Gegenschein</option> <option value="167">Solar System : Sky Phenomenon : Night Sky : Night glow</option> <option value="168">Solar System : Sky Phenomenon : Eclipse</option> <option value="169">Solar System : Sky Phenomenon : Eclipse : Solar</option> <option value="170">Solar System : Sky Phenomenon : Eclipse : Solar : Total</option> <option value="171">Solar System : Sky Phenomenon : Eclipse : Solar : Partial</option> <option value="172">Solar System : Sky Phenomenon : Eclipse : Solar : Annular</option> <option value="173">Solar System : Sky Phenomenon : Eclipse : Lunar</option> <option value="174">Solar System : Sky Phenomenon : Eclipse : Lunar : Total</option> <option value="175">Solar System : Sky Phenomenon : Eclipse : Lunar : Partial</option> <option value="176">Solar System : Sky Phenomenon : Eclipse : Lunar : Penumbral</option> <option value="177">Solar System : Sky Phenomenon : Eclipse : Occultation</option> <option value="178">Solar System : Sky Phenomenon : Eclipse : Transit</option> <option value="179">Solar System : Sky Phenomenon : Light Phenomenon</option> <option value="180">Solar System : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset</option> <option value="181">Solar System : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Green flash</option> <option value="182">Solar System : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Refractive Distortion</option> <option value="183">Solar System : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Sun Pillar</option> <option value="184">Solar System : Sky Phenomenon : Light Phenomenon : Cloud</option> <option value="185">Solar System : Sky Phenomenon : Light Phenomenon : Cloud : Iridescent</option> <option value="186">Solar System : Sky Phenomenon : Light Phenomenon : Cloud : Noctilucent</option> <option value="187">Solar System : Sky Phenomenon : Light Phenomenon : Cloud : Nacreous</option> <option value="188">Solar System : Sky Phenomenon : Light Phenomenon : Cloud : Corona</option> <option value="189">Solar System : Sky Phenomenon : Light Phenomenon : Cloud : Glory</option> <option value="190">Solar System : Sky Phenomenon : Light Phenomenon : Rainbow</option> <option value="191">Solar System : Sky Phenomenon : Light Phenomenon : Rainbow : Moonbow</option> <option value="192">Solar System : Sky Phenomenon : Light Phenomenon : Rainbow : Fogbow</option> <option value="193">Solar System : Sky Phenomenon : Light Phenomenon : Halo</option> <option value="194">Solar System : Sky Phenomenon : Light Phenomenon : Halo : Circle</option> <option value="195">Solar System : Sky Phenomenon : Light Phenomenon : Halo : Parhelia</option> <option value="196">Solar System : Sky Phenomenon : Light Phenomenon : Halo : Arc</option> <option value="197">Solar System : Sky Phenomenon : Light Phenomenon : Ray-Shadow</option> <option value="198">Solar System : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Crepuscular ray</option> <option value="199">Solar System : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Anti-crepuscular ray</option> <option value="200">Solar System : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Earth shadow</option> <option value="201">Solar System : Sky Phenomenon : Light Phenomenon : Lightning</option> <option value="202">Solar System : Sky Phenomenon : Light Phenomenon : Aurora</option> <option value="203">Solar System : Technology</option> <option value="204">Solar System : Technology : Observatory</option> <option value="205">Solar System : Technology : Observatory : Facility</option> <option value="206">Solar System : Technology : Observatory : Telescope</option> <option value="207">Solar System : Technology : Observatory : Instrument</option> <option value="208">Solar System : Technology : Observatory : Detector</option> <option value="209">Solar System : Technology : Spacecraft</option> <option value="210">Solar System : Technology : Spacecraft : Orbiter</option> <option value="211">Solar System : Technology : Spacecraft : Probe</option> <option value="212">Solar System : Technology : Spacecraft : Lander</option> <option value="213">Solar System : Technology : Spacecraft : Manned</option> <option value="214">Solar System : Technology : Spacecraft : Launch Vehicle</option> <option value="215">Solar System : People</option> <option value="216">Solar System : People : Scientist</option> <option value="217">Solar System : People : Astronaut</option> <option value="218">Solar System : People : Other/General</option> <option value="219">Milky Way</option> <option value="220">Milky Way : Planet</option> <option value="221">Milky Way : Planet : Type : Terrestrial</option> <option value="222">Milky Way : Planet : Type : Gas Giant</option> <option value="223">Milky Way : Planet : Feature : Surface</option> <option value="224">Milky Way : Planet : Feature : Surface : Mountain</option> <option value="225">Milky Way : Planet : Feature : Surface : Canyon</option> <option value="226">Milky Way : Planet : Feature : Surface : Volcanic</option> <option value="227">Milky Way : Planet : Feature : Surface : Impact</option> <option value="228">Milky Way : Planet : Feature : Surface : Erosion</option> <option value="229">Milky Way : Planet : Feature : Surface : Liquid</option> <option value="230">Milky Way : Planet : Feature : Surface : Ice</option> <option value="231">Milky Way : Planet : Feature : Atmosphere</option> <option value="232">Milky Way : Planet : Feature : Atmosphere : Cloud</option> <option value="233">Milky Way : Planet : Feature : Atmosphere : Storm</option> <option value="234">Milky Way : Planet : Feature : Atmosphere : Belt</option> <option value="235">Milky Way : Planet : Feature : Atmosphere : Aurora</option> <option value="236">Milky Way : Planet : Special Cases : Transiting</option> <option value="237">Milky Way : Planet : Special Cases : Hot Jupiter</option> <option value="238">Milky Way : Planet : Special Cases : Pulsar planet</option> <option value="239">Milky Way : Planet : Satellite</option> <option value="240">Milky Way : Planet : Satellite : Feature : Surface</option> <option value="241">Milky Way : Planet : Satellite : Feature : Surface : Mountain</option> <option value="242">Milky Way : Planet : Satellite : Feature : Surface : Canyon</option> <option value="243">Milky Way : Planet : Satellite : Feature : Surface : Volcanic</option> <option value="244">Milky Way : Planet : Satellite : Feature : Surface : Impact</option> <option value="245">Milky Way : Planet : Satellite : Feature : Surface : Erosion</option> <option value="246">Milky Way : Planet : Satellite : Feature : Surface : Liquid</option> <option value="247">Milky Way : Planet : Satellite : Feature : Surface : Ice</option> <option value="248">Milky Way : Planet : Satellite : Feature : Atmosphere</option> <option value="249">Milky Way : Planet : Ring</option> <option value="250">Milky Way : Interplanetary Body</option> <option value="251">Milky Way : Interplanetary Body : Dwarf planet</option> <option value="252">Milky Way : Interplanetary Body : Comet</option> <option value="253">Milky Way : Interplanetary Body : Comet : Nucleus</option> <option value="254">Milky Way : Interplanetary Body : Comet : Coma</option> <option value="255">Milky Way : Interplanetary Body : Comet : Tail</option> <option value="256">Milky Way : Interplanetary Body : Comet : Tail : Dust</option> <option value="257">Milky Way : Interplanetary Body : Comet : Tail : Gas</option> <option value="258">Milky Way : Interplanetary Body : Asteroid</option> <option value="259">Milky Way : Interplanetary Body : Meteoroid</option> <option value="260">Milky Way : Star</option> <option value="261">Milky Way : Star : Evolutionary Stage : Protostar</option> <option value="262">Milky Way : Star : Evolutionary Stage : Young Stellar Object</option> <option value="263">Milky Way : Star : Evolutionary Stage : Main Sequence</option> <option value="264">Milky Way : Star : Evolutionary Stage : Red Giant</option> <option value="265">Milky Way : Star : Evolutionary Stage : Red Supergiant</option> <option value="266">Milky Way : Star : Evolutionary Stage : Blue Supergiant</option> <option value="267">Milky Way : Star : Evolutionary Stage : White Dwarf</option> <option value="268">Milky Way : Star : Evolutionary Stage : Supernova</option> <option value="269">Milky Way : Star : Evolutionary Stage : Neutron Star</option> <option value="270">Milky Way : Star : Evolutionary Stage : Neutron Star : Pulsar</option> <option value="271">Milky Way : Star : Evolutionary Stage : Neutron Star : Magnetar</option> <option value="272">Milky Way : Star : Evolutionary Stage : Black Hole</option> <option value="273">Milky Way : Star : Type : Variable</option> <option value="274">Milky Way : Star : Type : Variable : Pulsating</option> <option value="275">Milky Way : Star : Type : Variable : Irregular</option> <option value="276">Milky Way : Star : Type : Variable : Eclipsing</option> <option value="277">Milky Way : Star : Type : Variable : Flare Star</option> <option value="278">Milky Way : Star : Type : Variable : Nova</option> <option value="279">Milky Way : Star : Type : Variable : X-Ray Binary (Star)</option> <option value="280">Milky Way : Star : Type : Carbon</option> <option value="281">Milky Way : Star : Type : Brown Dwarf</option> <option value="282">Milky Way : Star : Type : Wolf-Rayet</option> <option value="283">Milky Way : Star : Type : Blue Straggler</option> <option value="284">Milky Way : Star : Type : Exotic</option> <option value="285">Milky Way : Star : Type : Exotic : X-Ray Binary</option> <option value="286">Milky Way : Star : Spectral Type : O</option> <option value="287">Milky Way : Star : Spectral Type : B</option> <option value="288">Milky Way : Star : Spectral Type : A</option> <option value="289">Milky Way : Star : Spectral Type : F</option> <option value="290">Milky Way : Star : Spectral Type : G</option> <option value="291">Milky Way : Star : Spectral Type : K</option> <option value="292">Milky Way : Star : Spectral Type : M</option> <option value="293">Milky Way : Star : Spectral Type : L</option> <option value="294">Milky Way : Star : Spectral Type : T</option> <option value="295">Milky Way : Star : Population : I</option> <option value="296">Milky Way : Star : Population : II</option> <option value="297">Milky Way : Star : Population : III</option> <option value="298">Milky Way : Star : Feature : Photosphere</option> <option value="299">Milky Way : Star : Feature : Photosphere : Granulation</option> <option value="300">Milky Way : Star : Feature : Photosphere : Sunspot</option> <option value="301">Milky Way : Star : Feature : Chromosphere</option> <option value="302">Milky Way : Star : Feature : Chromosphere : Flare</option> <option value="303">Milky Way : Star : Feature : Chromosphere : Facula</option> <option value="304">Milky Way : Star : Feature : Corona</option> <option value="305">Milky Way : Star : Feature : Corona : Prominence</option> <option value="306">Milky Way : Star : Grouping : Binary</option> <option value="307">Milky Way : Star : Grouping : Triple</option> <option value="308">Milky Way : Star : Grouping : Multiple</option> <option value="309">Milky Way : Star : Grouping : Cluster</option> <option value="310">Milky Way : Star : Grouping : Cluster : Open</option> <option value="311">Milky Way : Star : Grouping : Cluster : Globular</option> <option value="312">Milky Way : Star : Circumstellar Material</option> <option value="313">Milky Way : Star : Circumstellar Material : Planetary System</option> <option value="314">Milky Way : Star : Circumstellar Material : Disk</option> <option value="315">Milky Way : Star : Circumstellar Material : Disk : Protoplanetary</option> <option value="316">Milky Way : Star : Circumstellar Material : Disk : Accretion</option> <option value="317">Milky Way : Star : Circumstellar Material : Disk : Debris</option> <option value="318">Milky Way : Star : Circumstellar Material : Outflow</option> <option value="319">Milky Way : Star : Circumstellar Material : Outflow : Solar Wind</option> <option value="320">Milky Way : Star : Circumstellar Material : Outflow : Coronal Mass Ejection</option> <option value="321">Milky Way : Nebula</option> <option value="322">Milky Way : Nebula : Type : Interstellar Medium</option> <option value="323">Milky Way : Nebula : Type : Star Formation</option> <option value="324">Milky Way : Nebula : Type : Planetary</option> <option value="325">Milky Way : Nebula : Type : Supernova Remnant</option> <option value="326">Milky Way : Nebula : Type : Jet</option> <option value="327">Milky Way : Nebula : Appearance : Emission</option> <option value="328">Milky Way : Nebula : Appearance : Emission : H II Region</option> <option value="329">Milky Way : Nebula : Appearance : Reflection</option> <option value="330">Milky Way : Nebula : Appearance : Reflection : Light Echo</option> <option value="331">Milky Way : Nebula : Appearance : Dark</option> <option value="332">Milky Way : Nebula : Appearance : Dark : Molecular Cloud</option> <option value="333">Milky Way : Nebula : Appearance : Dark : Bok Globule</option> <option value="334">Milky Way : Nebula : Appearance : Dark : Proplyd</option> <option value="335">Milky Way : Galaxy</option> <option value="336">Milky Way : Galaxy : Type : Spiral</option> <option value="337">Milky Way : Galaxy : Type : Barred</option> <option value="338">Milky Way : Galaxy : Type : Lenticular</option> <option value="339">Milky Way : Galaxy : Type : Elliptical</option> <option value="340">Milky Way : Galaxy : Type : Ring</option> <option value="341">Milky Way : Galaxy : Type : Irregular</option> <option value="342">Milky Way : Galaxy : Type : Interacting</option> <option value="343">Milky Way : Galaxy : Type : Gravitationally Lensed</option> <option value="344">Milky Way : Galaxy : Size : Giant</option> <option value="345">Milky Way : Galaxy : Size : Dwarf</option> <option value="346">Milky Way : Galaxy : Activity : Normal</option> <option value="347">Milky Way : Galaxy : Activity : AGN</option> <option value="348">Milky Way : Galaxy : Activity : AGN : Quasar</option> <option value="349">Milky Way : Galaxy : Activity : AGN : Seyfert</option> <option value="350">Milky Way : Galaxy : Activity : AGN : Blazar</option> <option value="351">Milky Way : Galaxy : Activity : AGN : Liner</option> <option value="352">Milky Way : Galaxy : Activity : Starburst</option> <option value="353">Milky Way : Galaxy : Activity : Ultraluminous</option> <option value="354">Milky Way : Galaxy : Component : Bulge</option> <option value="355">Milky Way : Galaxy : Component : Bar</option> <option value="356">Milky Way : Galaxy : Component : Disk</option> <option value="357">Milky Way : Galaxy : Component : Halo</option> <option value="358">Milky Way : Galaxy : Component : Ring</option> <option value="359">Milky Way : Galaxy : Component : Central Black Hole</option> <option value="360">Milky Way : Galaxy : Component : Spiral Arm</option> <option value="361">Milky Way : Galaxy : Component : Dust Lane</option> <option value="362">Milky Way : Galaxy : Component : Center/Core</option> <option value="363">Milky Way : Galaxy : Grouping : Pair</option> <option value="364">Milky Way : Galaxy : Grouping : Multiple</option> <option value="365">Milky Way : Galaxy : Grouping : Cluster</option> <option value="366">Milky Way : Galaxy : Grouping : Supercluster</option> <option value="367">Milky Way : Cosmology</option> <option value="368">Milky Way : Cosmology : Morphology : Deep Field</option> <option value="369">Milky Way : Cosmology : Morphology : Large-Scale Structure</option> <option value="370">Milky Way : Cosmology : Morphology : Cosmic Background</option> <option value="371">Milky Way : Cosmology : Phenomenon : Lensing</option> <option value="372">Milky Way : Cosmology : Phenomenon : Gamma Ray Burst</option> <option value="373">Milky Way : Cosmology : Phenomenon : Dark Matter</option> <option value="374">Milky Way : Sky Phenomenon</option> <option value="375">Milky Way : Sky Phenomenon : Night Sky</option> <option value="376">Milky Way : Sky Phenomenon : Night Sky : Constellation</option> <option value="377">Milky Way : Sky Phenomenon : Night Sky : Asterism</option> <option value="378">Milky Way : Sky Phenomenon : Night Sky : Milky Way</option> <option value="379">Milky Way : Sky Phenomenon : Night Sky : Trail</option> <option value="380">Milky Way : Sky Phenomenon : Night Sky : Trail : Meteor</option> <option value="381">Milky Way : Sky Phenomenon : Night Sky : Trail : Star</option> <option value="382">Milky Way : Sky Phenomenon : Night Sky : Trail : Satellite</option> <option value="383">Milky Way : Sky Phenomenon : Night Sky : Zodiacal Light</option> <option value="384">Milky Way : Sky Phenomenon : Night Sky : Zodiacal Light : Gegenschein</option> <option value="385">Milky Way : Sky Phenomenon : Night Sky : Night glow</option> <option value="386">Milky Way : Sky Phenomenon : Eclipse</option> <option value="387">Milky Way : Sky Phenomenon : Eclipse : Solar</option> <option value="388">Milky Way : Sky Phenomenon : Eclipse : Solar : Total</option> <option value="389">Milky Way : Sky Phenomenon : Eclipse : Solar : Partial</option> <option value="390">Milky Way : Sky Phenomenon : Eclipse : Solar : Annular</option> <option value="391">Milky Way : Sky Phenomenon : Eclipse : Lunar</option> <option value="392">Milky Way : Sky Phenomenon : Eclipse : Lunar : Total</option> <option value="393">Milky Way : Sky Phenomenon : Eclipse : Lunar : Partial</option> <option value="394">Milky Way : Sky Phenomenon : Eclipse : Lunar : Penumbral</option> <option value="395">Milky Way : Sky Phenomenon : Eclipse : Occultation</option> <option value="396">Milky Way : Sky Phenomenon : Eclipse : Transit</option> <option value="397">Milky Way : Sky Phenomenon : Light Phenomenon</option> <option value="398">Milky Way : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset</option> <option value="399">Milky Way : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Green flash</option> <option value="400">Milky Way : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Refractive Distortion</option> <option value="401">Milky Way : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Sun Pillar</option> <option value="402">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud</option> <option value="403">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud : Iridescent</option> <option value="404">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud : Noctilucent</option> <option value="405">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud : Nacreous</option> <option value="406">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud : Corona</option> <option value="407">Milky Way : Sky Phenomenon : Light Phenomenon : Cloud : Glory</option> <option value="408">Milky Way : Sky Phenomenon : Light Phenomenon : Rainbow</option> <option value="409">Milky Way : Sky Phenomenon : Light Phenomenon : Rainbow : Moonbow</option> <option value="410">Milky Way : Sky Phenomenon : Light Phenomenon : Rainbow : Fogbow</option> <option value="411">Milky Way : Sky Phenomenon : Light Phenomenon : Halo</option> <option value="412">Milky Way : Sky Phenomenon : Light Phenomenon : Halo : Circle</option> <option value="413">Milky Way : Sky Phenomenon : Light Phenomenon : Halo : Parhelia</option> <option value="414">Milky Way : Sky Phenomenon : Light Phenomenon : Halo : Arc</option> <option value="415">Milky Way : Sky Phenomenon : Light Phenomenon : Ray-Shadow</option> <option value="416">Milky Way : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Crepuscular ray</option> <option value="417">Milky Way : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Anti-crepuscular ray</option> <option value="418">Milky Way : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Earth shadow</option> <option value="419">Milky Way : Sky Phenomenon : Light Phenomenon : Lightning</option> <option value="420">Milky Way : Sky Phenomenon : Light Phenomenon : Aurora</option> <option value="421">Milky Way : Technology</option> <option value="422">Milky Way : Technology : Observatory</option> <option value="423">Milky Way : Technology : Observatory : Facility</option> <option value="424">Milky Way : Technology : Observatory : Telescope</option> <option value="425">Milky Way : Technology : Observatory : Instrument</option> <option value="426">Milky Way : Technology : Observatory : Detector</option> <option value="427">Milky Way : Technology : Spacecraft</option> <option value="428">Milky Way : Technology : Spacecraft : Orbiter</option> <option value="429">Milky Way : Technology : Spacecraft : Probe</option> <option value="430">Milky Way : Technology : Spacecraft : Lander</option> <option value="431">Milky Way : Technology : Spacecraft : Manned</option> <option value="432">Milky Way : Technology : Spacecraft : Launch Vehicle</option> <option value="433">Milky Way : People</option> <option value="434">Milky Way : People : Scientist</option> <option value="435">Milky Way : People : Astronaut</option> <option value="436">Milky Way : People : Other/General</option> <option value="437">Local Universe</option> <option value="438">Local Universe : Planet</option> <option value="439">Local Universe : Planet : Type : Terrestrial</option> <option value="440">Local Universe : Planet : Type : Gas Giant</option> <option value="441">Local Universe : Planet : Feature : Surface</option> <option value="442">Local Universe : Planet : Feature : Surface : Mountain</option> <option value="443">Local Universe : Planet : Feature : Surface : Canyon</option> <option value="444">Local Universe : Planet : Feature : Surface : Volcanic</option> <option value="445">Local Universe : Planet : Feature : Surface : Impact</option> <option value="446">Local Universe : Planet : Feature : Surface : Erosion</option> <option value="447">Local Universe : Planet : Feature : Surface : Liquid</option> <option value="448">Local Universe : Planet : Feature : Surface : Ice</option> <option value="449">Local Universe : Planet : Feature : Atmosphere</option> <option value="450">Local Universe : Planet : Feature : Atmosphere : Cloud</option> <option value="451">Local Universe : Planet : Feature : Atmosphere : Storm</option> <option value="452">Local Universe : Planet : Feature : Atmosphere : Belt</option> <option value="453">Local Universe : Planet : Feature : Atmosphere : Aurora</option> <option value="454">Local Universe : Planet : Special Cases : Transiting</option> <option value="455">Local Universe : Planet : Special Cases : Hot Jupiter</option> <option value="456">Local Universe : Planet : Special Cases : Pulsar planet</option> <option value="457">Local Universe : Planet : Satellite</option> <option value="458">Local Universe : Planet : Satellite : Feature : Surface</option> <option value="459">Local Universe : Planet : Satellite : Feature : Surface : Mountain</option> <option value="460">Local Universe : Planet : Satellite : Feature : Surface : Canyon</option> <option value="461">Local Universe : Planet : Satellite : Feature : Surface : Volcanic</option> <option value="462">Local Universe : Planet : Satellite : Feature : Surface : Impact</option> <option value="463">Local Universe : Planet : Satellite : Feature : Surface : Erosion</option> <option value="464">Local Universe : Planet : Satellite : Feature : Surface : Liquid</option> <option value="465">Local Universe : Planet : Satellite : Feature : Surface : Ice</option> <option value="466">Local Universe : Planet : Satellite : Feature : Atmosphere</option> <option value="467">Local Universe : Planet : Ring</option> <option value="468">Local Universe : Interplanetary Body</option> <option value="469">Local Universe : Interplanetary Body : Dwarf planet</option> <option value="470">Local Universe : Interplanetary Body : Comet</option> <option value="471">Local Universe : Interplanetary Body : Comet : Nucleus</option> <option value="472">Local Universe : Interplanetary Body : Comet : Coma</option> <option value="473">Local Universe : Interplanetary Body : Comet : Tail</option> <option value="474">Local Universe : Interplanetary Body : Comet : Tail : Dust</option> <option value="475">Local Universe : Interplanetary Body : Comet : Tail : Gas</option> <option value="476">Local Universe : Interplanetary Body : Asteroid</option> <option value="477">Local Universe : Interplanetary Body : Meteoroid</option> <option value="478">Local Universe : Star</option> <option value="479">Local Universe : Star : Evolutionary Stage : Protostar</option> <option value="480">Local Universe : Star : Evolutionary Stage : Young Stellar Object</option> <option value="481">Local Universe : Star : Evolutionary Stage : Main Sequence</option> <option value="482">Local Universe : Star : Evolutionary Stage : Red Giant</option> <option value="483">Local Universe : Star : Evolutionary Stage : Red Supergiant</option> <option value="484">Local Universe : Star : Evolutionary Stage : Blue Supergiant</option> <option value="485">Local Universe : Star : Evolutionary Stage : White Dwarf</option> <option value="486">Local Universe : Star : Evolutionary Stage : Supernova</option> <option value="487">Local Universe : Star : Evolutionary Stage : Neutron Star</option> <option value="488">Local Universe : Star : Evolutionary Stage : Neutron Star : Pulsar</option> <option value="489">Local Universe : Star : Evolutionary Stage : Neutron Star : Magnetar</option> <option value="490">Local Universe : Star : Evolutionary Stage : Black Hole</option> <option value="491">Local Universe : Star : Type : Variable</option> <option value="492">Local Universe : Star : Type : Variable : Pulsating</option> <option value="493">Local Universe : Star : Type : Variable : Irregular</option> <option value="494">Local Universe : Star : Type : Variable : Eclipsing</option> <option value="495">Local Universe : Star : Type : Variable : Flare Star</option> <option value="496">Local Universe : Star : Type : Variable : Nova</option> <option value="497">Local Universe : Star : Type : Variable : X-Ray Binary (Star)</option> <option value="498">Local Universe : Star : Type : Carbon</option> <option value="499">Local Universe : Star : Type : Brown Dwarf</option> <option value="500">Local Universe : Star : Type : Wolf-Rayet</option> <option value="501">Local Universe : Star : Type : Blue Straggler</option> <option value="502">Local Universe : Star : Type : Exotic</option> <option value="503">Local Universe : Star : Type : Exotic : X-Ray Binary</option> <option value="504">Local Universe : Star : Spectral Type : O</option> <option value="505">Local Universe : Star : Spectral Type : B</option> <option value="506">Local Universe : Star : Spectral Type : A</option> <option value="507">Local Universe : Star : Spectral Type : F</option> <option value="508">Local Universe : Star : Spectral Type : G</option> <option value="509">Local Universe : Star : Spectral Type : K</option> <option value="510">Local Universe : Star : Spectral Type : M</option> <option value="511">Local Universe : Star : Spectral Type : L</option> <option value="512">Local Universe : Star : Spectral Type : T</option> <option value="513">Local Universe : Star : Population : I</option> <option value="514">Local Universe : Star : Population : II</option> <option value="515">Local Universe : Star : Population : III</option> <option value="516">Local Universe : Star : Feature : Photosphere</option> <option value="517">Local Universe : Star : Feature : Photosphere : Granulation</option> <option value="518">Local Universe : Star : Feature : Photosphere : Sunspot</option> <option value="519">Local Universe : Star : Feature : Chromosphere</option> <option value="520">Local Universe : Star : Feature : Chromosphere : Flare</option> <option value="521">Local Universe : Star : Feature : Chromosphere : Facula</option> <option value="522">Local Universe : Star : Feature : Corona</option> <option value="523">Local Universe : Star : Feature : Corona : Prominence</option> <option value="524">Local Universe : Star : Grouping : Binary</option> <option value="525">Local Universe : Star : Grouping : Triple</option> <option value="526">Local Universe : Star : Grouping : Multiple</option> <option value="527">Local Universe : Star : Grouping : Cluster</option> <option value="528">Local Universe : Star : Grouping : Cluster : Open</option> <option value="529">Local Universe : Star : Grouping : Cluster : Globular</option> <option value="530">Local Universe : Star : Circumstellar Material</option> <option value="531">Local Universe : Star : Circumstellar Material : Planetary System</option> <option value="532">Local Universe : Star : Circumstellar Material : Disk</option> <option value="533">Local Universe : Star : Circumstellar Material : Disk : Protoplanetary</option> <option value="534">Local Universe : Star : Circumstellar Material : Disk : Accretion</option> <option value="535">Local Universe : Star : Circumstellar Material : Disk : Debris</option> <option value="536">Local Universe : Star : Circumstellar Material : Outflow</option> <option value="537">Local Universe : Star : Circumstellar Material : Outflow : Solar Wind</option> <option value="538">Local Universe : Star : Circumstellar Material : Outflow : Coronal Mass Ejection</option> <option value="539">Local Universe : Nebula</option> <option value="540">Local Universe : Nebula : Type : Interstellar Medium</option> <option value="541">Local Universe : Nebula : Type : Star Formation</option> <option value="542">Local Universe : Nebula : Type : Planetary</option> <option value="543">Local Universe : Nebula : Type : Supernova Remnant</option> <option value="544">Local Universe : Nebula : Type : Jet</option> <option value="545">Local Universe : Nebula : Appearance : Emission</option> <option value="546">Local Universe : Nebula : Appearance : Emission : H II Region</option> <option value="547">Local Universe : Nebula : Appearance : Reflection</option> <option value="548">Local Universe : Nebula : Appearance : Reflection : Light Echo</option> <option value="549">Local Universe : Nebula : Appearance : Dark</option> <option value="550">Local Universe : Nebula : Appearance : Dark : Molecular Cloud</option> <option value="551">Local Universe : Nebula : Appearance : Dark : Bok Globule</option> <option value="552">Local Universe : Nebula : Appearance : Dark : Proplyd</option> <option value="553">Local Universe : Galaxy</option> <option value="554">Local Universe : Galaxy : Type : Spiral</option> <option value="555">Local Universe : Galaxy : Type : Barred</option> <option value="556">Local Universe : Galaxy : Type : Lenticular</option> <option value="557">Local Universe : Galaxy : Type : Elliptical</option> <option value="558">Local Universe : Galaxy : Type : Ring</option> <option value="559">Local Universe : Galaxy : Type : Irregular</option> <option value="560">Local Universe : Galaxy : Type : Interacting</option> <option value="561">Local Universe : Galaxy : Type : Gravitationally Lensed</option> <option value="562">Local Universe : Galaxy : Size : Giant</option> <option value="563">Local Universe : Galaxy : Size : Dwarf</option> <option value="564">Local Universe : Galaxy : Activity : Normal</option> <option value="565">Local Universe : Galaxy : Activity : AGN</option> <option value="566">Local Universe : Galaxy : Activity : AGN : Quasar</option> <option value="567">Local Universe : Galaxy : Activity : AGN : Seyfert</option> <option value="568">Local Universe : Galaxy : Activity : AGN : Blazar</option> <option value="569">Local Universe : Galaxy : Activity : AGN : Liner</option> <option value="570">Local Universe : Galaxy : Activity : Starburst</option> <option value="571">Local Universe : Galaxy : Activity : Ultraluminous</option> <option value="572">Local Universe : Galaxy : Component : Bulge</option> <option value="573">Local Universe : Galaxy : Component : Bar</option> <option value="574">Local Universe : Galaxy : Component : Disk</option> <option value="575">Local Universe : Galaxy : Component : Halo</option> <option value="576">Local Universe : Galaxy : Component : Ring</option> <option value="577">Local Universe : Galaxy : Component : Central Black Hole</option> <option value="578">Local Universe : Galaxy : Component : Spiral Arm</option> <option value="579">Local Universe : Galaxy : Component : Dust Lane</option> <option value="580">Local Universe : Galaxy : Component : Center/Core</option> <option value="581">Local Universe : Galaxy : Grouping : Pair</option> <option value="582">Local Universe : Galaxy : Grouping : Multiple</option> <option value="583">Local Universe : Galaxy : Grouping : Cluster</option> <option value="584">Local Universe : Galaxy : Grouping : Supercluster</option> <option value="585">Local Universe : Cosmology</option> <option value="586">Local Universe : Cosmology : Morphology : Deep Field</option> <option value="587">Local Universe : Cosmology : Morphology : Large-Scale Structure</option> <option value="588">Local Universe : Cosmology : Morphology : Cosmic Background</option> <option value="589">Local Universe : Cosmology : Phenomenon : Lensing</option> <option value="590">Local Universe : Cosmology : Phenomenon : Gamma Ray Burst</option> <option value="591">Local Universe : Cosmology : Phenomenon : Dark Matter</option> <option value="592">Local Universe : Sky Phenomenon</option> <option value="593">Local Universe : Sky Phenomenon : Night Sky</option> <option value="594">Local Universe : Sky Phenomenon : Night Sky : Constellation</option> <option value="595">Local Universe : Sky Phenomenon : Night Sky : Asterism</option> <option value="596">Local Universe : Sky Phenomenon : Night Sky : Milky Way</option> <option value="597">Local Universe : Sky Phenomenon : Night Sky : Trail</option> <option value="598">Local Universe : Sky Phenomenon : Night Sky : Trail : Meteor</option> <option value="599">Local Universe : Sky Phenomenon : Night Sky : Trail : Star</option> <option value="600">Local Universe : Sky Phenomenon : Night Sky : Trail : Satellite</option> <option value="601">Local Universe : Sky Phenomenon : Night Sky : Zodiacal Light</option> <option value="602">Local Universe : Sky Phenomenon : Night Sky : Zodiacal Light : Gegenschein</option> <option value="603">Local Universe : Sky Phenomenon : Night Sky : Night glow</option> <option value="604">Local Universe : Sky Phenomenon : Eclipse</option> <option value="605">Local Universe : Sky Phenomenon : Eclipse : Solar</option> <option value="606">Local Universe : Sky Phenomenon : Eclipse : Solar : Total</option> <option value="607">Local Universe : Sky Phenomenon : Eclipse : Solar : Partial</option> <option value="608">Local Universe : Sky Phenomenon : Eclipse : Solar : Annular</option> <option value="609">Local Universe : Sky Phenomenon : Eclipse : Lunar</option> <option value="610">Local Universe : Sky Phenomenon : Eclipse : Lunar : Total</option> <option value="611">Local Universe : Sky Phenomenon : Eclipse : Lunar : Partial</option> <option value="612">Local Universe : Sky Phenomenon : Eclipse : Lunar : Penumbral</option> <option value="613">Local Universe : Sky Phenomenon : Eclipse : Occultation</option> <option value="614">Local Universe : Sky Phenomenon : Eclipse : Transit</option> <option value="615">Local Universe : Sky Phenomenon : Light Phenomenon</option> <option value="616">Local Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset</option> <option value="617">Local Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Green flash</option> <option value="618">Local Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Refractive Distortion</option> <option value="619">Local Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Sun Pillar</option> <option value="620">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud</option> <option value="621">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud : Iridescent</option> <option value="622">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud : Noctilucent</option> <option value="623">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud : Nacreous</option> <option value="624">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud : Corona</option> <option value="625">Local Universe : Sky Phenomenon : Light Phenomenon : Cloud : Glory</option> <option value="626">Local Universe : Sky Phenomenon : Light Phenomenon : Rainbow</option> <option value="627">Local Universe : Sky Phenomenon : Light Phenomenon : Rainbow : Moonbow</option> <option value="628">Local Universe : Sky Phenomenon : Light Phenomenon : Rainbow : Fogbow</option> <option value="629">Local Universe : Sky Phenomenon : Light Phenomenon : Halo</option> <option value="630">Local Universe : Sky Phenomenon : Light Phenomenon : Halo : Circle</option> <option value="631">Local Universe : Sky Phenomenon : Light Phenomenon : Halo : Parhelia</option> <option value="632">Local Universe : Sky Phenomenon : Light Phenomenon : Halo : Arc</option> <option value="633">Local Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow</option> <option value="634">Local Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Crepuscular ray</option> <option value="635">Local Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Anti-crepuscular ray</option> <option value="636">Local Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Earth shadow</option> <option value="637">Local Universe : Sky Phenomenon : Light Phenomenon : Lightning</option> <option value="638">Local Universe : Sky Phenomenon : Light Phenomenon : Aurora</option> <option value="639">Local Universe : Technology</option> <option value="640">Local Universe : Technology : Observatory</option> <option value="641">Local Universe : Technology : Observatory : Facility</option> <option value="642">Local Universe : Technology : Observatory : Telescope</option> <option value="643">Local Universe : Technology : Observatory : Instrument</option> <option value="644">Local Universe : Technology : Observatory : Detector</option> <option value="645">Local Universe : Technology : Spacecraft</option> <option value="646">Local Universe : Technology : Spacecraft : Orbiter</option> <option value="647">Local Universe : Technology : Spacecraft : Probe</option> <option value="648">Local Universe : Technology : Spacecraft : Lander</option> <option value="649">Local Universe : Technology : Spacecraft : Manned</option> <option value="650">Local Universe : Technology : Spacecraft : Launch Vehicle</option> <option value="651">Local Universe : People</option> <option value="652">Local Universe : People : Scientist</option> <option value="653">Local Universe : People : Astronaut</option> <option value="654">Local Universe : People : Other/General</option> <option value="655">Early Universe</option> <option value="656">Early Universe : Planet</option> <option value="657">Early Universe : Planet : Type : Terrestrial</option> <option value="658">Early Universe : Planet : Type : Gas Giant</option> <option value="659">Early Universe : Planet : Feature : Surface</option> <option value="660">Early Universe : Planet : Feature : Surface : Mountain</option> <option value="661">Early Universe : Planet : Feature : Surface : Canyon</option> <option value="662">Early Universe : Planet : Feature : Surface : Volcanic</option> <option value="663">Early Universe : Planet : Feature : Surface : Impact</option> <option value="664">Early Universe : Planet : Feature : Surface : Erosion</option> <option value="665">Early Universe : Planet : Feature : Surface : Liquid</option> <option value="666">Early Universe : Planet : Feature : Surface : Ice</option> <option value="667">Early Universe : Planet : Feature : Atmosphere</option> <option value="668">Early Universe : Planet : Feature : Atmosphere : Cloud</option> <option value="669">Early Universe : Planet : Feature : Atmosphere : Storm</option> <option value="670">Early Universe : Planet : Feature : Atmosphere : Belt</option> <option value="671">Early Universe : Planet : Feature : Atmosphere : Aurora</option> <option value="672">Early Universe : Planet : Special Cases : Transiting</option> <option value="673">Early Universe : Planet : Special Cases : Hot Jupiter</option> <option value="674">Early Universe : Planet : Special Cases : Pulsar planet</option> <option value="675">Early Universe : Planet : Satellite</option> <option value="676">Early Universe : Planet : Satellite : Feature : Surface</option> <option value="677">Early Universe : Planet : Satellite : Feature : Surface : Mountain</option> <option value="678">Early Universe : Planet : Satellite : Feature : Surface : Canyon</option> <option value="679">Early Universe : Planet : Satellite : Feature : Surface : Volcanic</option> <option value="680">Early Universe : Planet : Satellite : Feature : Surface : Impact</option> <option value="681">Early Universe : Planet : Satellite : Feature : Surface : Erosion</option> <option value="682">Early Universe : Planet : Satellite : Feature : Surface : Liquid</option> <option value="683">Early Universe : Planet : Satellite : Feature : Surface : Ice</option> <option value="684">Early Universe : Planet : Satellite : Feature : Atmosphere</option> <option value="685">Early Universe : Planet : Ring</option> <option value="686">Early Universe : Interplanetary Body</option> <option value="687">Early Universe : Interplanetary Body : Dwarf planet</option> <option value="688">Early Universe : Interplanetary Body : Comet</option> <option value="689">Early Universe : Interplanetary Body : Comet : Nucleus</option> <option value="690">Early Universe : Interplanetary Body : Comet : Coma</option> <option value="691">Early Universe : Interplanetary Body : Comet : Tail</option> <option value="692">Early Universe : Interplanetary Body : Comet : Tail : Dust</option> <option value="693">Early Universe : Interplanetary Body : Comet : Tail : Gas</option> <option value="694">Early Universe : Interplanetary Body : Asteroid</option> <option value="695">Early Universe : Interplanetary Body : Meteoroid</option> <option value="696">Early Universe : Star</option> <option value="697">Early Universe : Star : Evolutionary Stage : Protostar</option> <option value="698">Early Universe : Star : Evolutionary Stage : Young Stellar Object</option> <option value="699">Early Universe : Star : Evolutionary Stage : Main Sequence</option> <option value="700">Early Universe : Star : Evolutionary Stage : Red Giant</option> <option value="701">Early Universe : Star : Evolutionary Stage : Red Supergiant</option> <option value="702">Early Universe : Star : Evolutionary Stage : Blue Supergiant</option> <option value="703">Early Universe : Star : Evolutionary Stage : White Dwarf</option> <option value="704">Early Universe : Star : Evolutionary Stage : Supernova</option> <option value="705">Early Universe : Star : Evolutionary Stage : Neutron Star</option> <option value="706">Early Universe : Star : Evolutionary Stage : Neutron Star : Pulsar</option> <option value="707">Early Universe : Star : Evolutionary Stage : Neutron Star : Magnetar</option> <option value="708">Early Universe : Star : Evolutionary Stage : Black Hole</option> <option value="709">Early Universe : Star : Type : Variable</option> <option value="710">Early Universe : Star : Type : Variable : Pulsating</option> <option value="711">Early Universe : Star : Type : Variable : Irregular</option> <option value="712">Early Universe : Star : Type : Variable : Eclipsing</option> <option value="713">Early Universe : Star : Type : Variable : Flare Star</option> <option value="714">Early Universe : Star : Type : Variable : Nova</option> <option value="715">Early Universe : Star : Type : Variable : X-Ray Binary (Star)</option> <option value="716">Early Universe : Star : Type : Carbon</option> <option value="717">Early Universe : Star : Type : Brown Dwarf</option> <option value="718">Early Universe : Star : Type : Wolf-Rayet</option> <option value="719">Early Universe : Star : Type : Blue Straggler</option> <option value="720">Early Universe : Star : Type : Exotic</option> <option value="721">Early Universe : Star : Type : Exotic : X-Ray Binary</option> <option value="722">Early Universe : Star : Spectral Type : O</option> <option value="723">Early Universe : Star : Spectral Type : B</option> <option value="724">Early Universe : Star : Spectral Type : A</option> <option value="725">Early Universe : Star : Spectral Type : F</option> <option value="726">Early Universe : Star : Spectral Type : G</option> <option value="727">Early Universe : Star : Spectral Type : K</option> <option value="728">Early Universe : Star : Spectral Type : M</option> <option value="729">Early Universe : Star : Spectral Type : L</option> <option value="730">Early Universe : Star : Spectral Type : T</option> <option value="731">Early Universe : Star : Population : I</option> <option value="732">Early Universe : Star : Population : II</option> <option value="733">Early Universe : Star : Population : III</option> <option value="734">Early Universe : Star : Feature : Photosphere</option> <option value="735">Early Universe : Star : Feature : Photosphere : Granulation</option> <option value="736">Early Universe : Star : Feature : Photosphere : Sunspot</option> <option value="737">Early Universe : Star : Feature : Chromosphere</option> <option value="738">Early Universe : Star : Feature : Chromosphere : Flare</option> <option value="739">Early Universe : Star : Feature : Chromosphere : Facula</option> <option value="740">Early Universe : Star : Feature : Corona</option> <option value="741">Early Universe : Star : Feature : Corona : Prominence</option> <option value="742">Early Universe : Star : Grouping : Binary</option> <option value="743">Early Universe : Star : Grouping : Triple</option> <option value="744">Early Universe : Star : Grouping : Multiple</option> <option value="745">Early Universe : Star : Grouping : Cluster</option> <option value="746">Early Universe : Star : Grouping : Cluster : Open</option> <option value="747">Early Universe : Star : Grouping : Cluster : Globular</option> <option value="748">Early Universe : Star : Circumstellar Material</option> <option value="749">Early Universe : Star : Circumstellar Material : Planetary System</option> <option value="750">Early Universe : Star : Circumstellar Material : Disk</option> <option value="751">Early Universe : Star : Circumstellar Material : Disk : Protoplanetary</option> <option value="752">Early Universe : Star : Circumstellar Material : Disk : Accretion</option> <option value="753">Early Universe : Star : Circumstellar Material : Disk : Debris</option> <option value="754">Early Universe : Star : Circumstellar Material : Outflow</option> <option value="755">Early Universe : Star : Circumstellar Material : Outflow : Solar Wind</option> <option value="756">Early Universe : Star : Circumstellar Material : Outflow : Coronal Mass Ejection</option> <option value="757">Early Universe : Nebula</option> <option value="758">Early Universe : Nebula : Type : Interstellar Medium</option> <option value="759">Early Universe : Nebula : Type : Star Formation</option> <option value="760">Early Universe : Nebula : Type : Planetary</option> <option value="761">Early Universe : Nebula : Type : Supernova Remnant</option> <option value="762">Early Universe : Nebula : Type : Jet</option> <option value="763">Early Universe : Nebula : Appearance : Emission</option> <option value="764">Early Universe : Nebula : Appearance : Emission : H II Region</option> <option value="765">Early Universe : Nebula : Appearance : Reflection</option> <option value="766">Early Universe : Nebula : Appearance : Reflection : Light Echo</option> <option value="767">Early Universe : Nebula : Appearance : Dark</option> <option value="768">Early Universe : Nebula : Appearance : Dark : Molecular Cloud</option> <option value="769">Early Universe : Nebula : Appearance : Dark : Bok Globule</option> <option value="770">Early Universe : Nebula : Appearance : Dark : Proplyd</option> <option value="771">Early Universe : Galaxy</option> <option value="772">Early Universe : Galaxy : Type : Spiral</option> <option value="773">Early Universe : Galaxy : Type : Barred</option> <option value="774">Early Universe : Galaxy : Type : Lenticular</option> <option value="775">Early Universe : Galaxy : Type : Elliptical</option> <option value="776">Early Universe : Galaxy : Type : Ring</option> <option value="777">Early Universe : Galaxy : Type : Irregular</option> <option value="778">Early Universe : Galaxy : Type : Interacting</option> <option value="779">Early Universe : Galaxy : Type : Gravitationally Lensed</option> <option value="780">Early Universe : Galaxy : Size : Giant</option> <option value="781">Early Universe : Galaxy : Size : Dwarf</option> <option value="782">Early Universe : Galaxy : Activity : Normal</option> <option value="783">Early Universe : Galaxy : Activity : AGN</option> <option value="784">Early Universe : Galaxy : Activity : AGN : Quasar</option> <option value="785">Early Universe : Galaxy : Activity : AGN : Seyfert</option> <option value="786">Early Universe : Galaxy : Activity : AGN : Blazar</option> <option value="787">Early Universe : Galaxy : Activity : AGN : Liner</option> <option value="788">Early Universe : Galaxy : Activity : Starburst</option> <option value="789">Early Universe : Galaxy : Activity : Ultraluminous</option> <option value="790">Early Universe : Galaxy : Component : Bulge</option> <option value="791">Early Universe : Galaxy : Component : Bar</option> <option value="792">Early Universe : Galaxy : Component : Disk</option> <option value="793">Early Universe : Galaxy : Component : Halo</option> <option value="794">Early Universe : Galaxy : Component : Ring</option> <option value="795">Early Universe : Galaxy : Component : Central Black Hole</option> <option value="796">Early Universe : Galaxy : Component : Spiral Arm</option> <option value="797">Early Universe : Galaxy : Component : Dust Lane</option> <option value="798">Early Universe : Galaxy : Component : Center/Core</option> <option value="799">Early Universe : Galaxy : Grouping : Pair</option> <option value="800">Early Universe : Galaxy : Grouping : Multiple</option> <option value="801">Early Universe : Galaxy : Grouping : Cluster</option> <option value="802">Early Universe : Galaxy : Grouping : Supercluster</option> <option value="803">Early Universe : Cosmology</option> <option value="804">Early Universe : Cosmology : Morphology : Deep Field</option> <option value="805">Early Universe : Cosmology : Morphology : Large-Scale Structure</option> <option value="806">Early Universe : Cosmology : Morphology : Cosmic Background</option> <option value="807">Early Universe : Cosmology : Phenomenon : Lensing</option> <option value="808">Early Universe : Cosmology : Phenomenon : Gamma Ray Burst</option> <option value="809">Early Universe : Cosmology : Phenomenon : Dark Matter</option> <option value="810">Early Universe : Sky Phenomenon</option> <option value="811">Early Universe : Sky Phenomenon : Night Sky</option> <option value="812">Early Universe : Sky Phenomenon : Night Sky : Constellation</option> <option value="813">Early Universe : Sky Phenomenon : Night Sky : Asterism</option> <option value="814">Early Universe : Sky Phenomenon : Night Sky : Milky Way</option> <option value="815">Early Universe : Sky Phenomenon : Night Sky : Trail</option> <option value="816">Early Universe : Sky Phenomenon : Night Sky : Trail : Meteor</option> <option value="817">Early Universe : Sky Phenomenon : Night Sky : Trail : Star</option> <option value="818">Early Universe : Sky Phenomenon : Night Sky : Trail : Satellite</option> <option value="819">Early Universe : Sky Phenomenon : Night Sky : Zodiacal Light</option> <option value="820">Early Universe : Sky Phenomenon : Night Sky : Zodiacal Light : Gegenschein</option> <option value="821">Early Universe : Sky Phenomenon : Night Sky : Night glow</option> <option value="822">Early Universe : Sky Phenomenon : Eclipse</option> <option value="823">Early Universe : Sky Phenomenon : Eclipse : Solar</option> <option value="824">Early Universe : Sky Phenomenon : Eclipse : Solar : Total</option> <option value="825">Early Universe : Sky Phenomenon : Eclipse : Solar : Partial</option> <option value="826">Early Universe : Sky Phenomenon : Eclipse : Solar : Annular</option> <option value="827">Early Universe : Sky Phenomenon : Eclipse : Lunar</option> <option value="828">Early Universe : Sky Phenomenon : Eclipse : Lunar : Total</option> <option value="829">Early Universe : Sky Phenomenon : Eclipse : Lunar : Partial</option> <option value="830">Early Universe : Sky Phenomenon : Eclipse : Lunar : Penumbral</option> <option value="831">Early Universe : Sky Phenomenon : Eclipse : Occultation</option> <option value="832">Early Universe : Sky Phenomenon : Eclipse : Transit</option> <option value="833">Early Universe : Sky Phenomenon : Light Phenomenon</option> <option value="834">Early Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset</option> <option value="835">Early Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Green flash</option> <option value="836">Early Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Refractive Distortion</option> <option value="837">Early Universe : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Sun Pillar</option> <option value="838">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud</option> <option value="839">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud : Iridescent</option> <option value="840">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud : Noctilucent</option> <option value="841">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud : Nacreous</option> <option value="842">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud : Corona</option> <option value="843">Early Universe : Sky Phenomenon : Light Phenomenon : Cloud : Glory</option> <option value="844">Early Universe : Sky Phenomenon : Light Phenomenon : Rainbow</option> <option value="845">Early Universe : Sky Phenomenon : Light Phenomenon : Rainbow : Moonbow</option> <option value="846">Early Universe : Sky Phenomenon : Light Phenomenon : Rainbow : Fogbow</option> <option value="847">Early Universe : Sky Phenomenon : Light Phenomenon : Halo</option> <option value="848">Early Universe : Sky Phenomenon : Light Phenomenon : Halo : Circle</option> <option value="849">Early Universe : Sky Phenomenon : Light Phenomenon : Halo : Parhelia</option> <option value="850">Early Universe : Sky Phenomenon : Light Phenomenon : Halo : Arc</option> <option value="851">Early Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow</option> <option value="852">Early Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Crepuscular ray</option> <option value="853">Early Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Anti-crepuscular ray</option> <option value="854">Early Universe : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Earth shadow</option> <option value="855">Early Universe : Sky Phenomenon : Light Phenomenon : Lightning</option> <option value="856">Early Universe : Sky Phenomenon : Light Phenomenon : Aurora</option> <option value="857">Early Universe : Technology</option> <option value="858">Early Universe : Technology : Observatory</option> <option value="859">Early Universe : Technology : Observatory : Facility</option> <option value="860">Early Universe : Technology : Observatory : Telescope</option> <option value="861">Early Universe : Technology : Observatory : Instrument</option> <option value="862">Early Universe : Technology : Observatory : Detector</option> <option value="863">Early Universe : Technology : Spacecraft</option> <option value="864">Early Universe : Technology : Spacecraft : Orbiter</option> <option value="865">Early Universe : Technology : Spacecraft : Probe</option> <option value="866">Early Universe : Technology : Spacecraft : Lander</option> <option value="867">Early Universe : Technology : Spacecraft : Manned</option> <option value="868">Early Universe : Technology : Spacecraft : Launch Vehicle</option> <option value="869">Early Universe : People</option> <option value="870">Early Universe : People : Scientist</option> <option value="871">Early Universe : People : Astronaut</option> <option value="872">Early Universe : People : Other/General</option> <option value="873">Unspecified</option> <option value="874">Unspecified : Planet</option> <option value="875">Unspecified : Planet : Type : Terrestrial</option> <option value="876">Unspecified : Planet : Type : Gas Giant</option> <option value="877">Unspecified : Planet : Feature : Surface</option> <option value="878">Unspecified : Planet : Feature : Surface : Mountain</option> <option value="879">Unspecified : Planet : Feature : Surface : Canyon</option> <option value="880">Unspecified : Planet : Feature : Surface : Volcanic</option> <option value="881">Unspecified : Planet : Feature : Surface : Impact</option> <option value="882">Unspecified : Planet : Feature : Surface : Erosion</option> <option value="883">Unspecified : Planet : Feature : Surface : Liquid</option> <option value="884">Unspecified : Planet : Feature : Surface : Ice</option> <option value="885">Unspecified : Planet : Feature : Atmosphere</option> <option value="886">Unspecified : Planet : Feature : Atmosphere : Cloud</option> <option value="887">Unspecified : Planet : Feature : Atmosphere : Storm</option> <option value="888">Unspecified : Planet : Feature : Atmosphere : Belt</option> <option value="889">Unspecified : Planet : Feature : Atmosphere : Aurora</option> <option value="890">Unspecified : Planet : Special Cases : Transiting</option> <option value="891">Unspecified : Planet : Special Cases : Hot Jupiter</option> <option value="892">Unspecified : Planet : Special Cases : Pulsar planet</option> <option value="893">Unspecified : Planet : Satellite</option> <option value="894">Unspecified : Planet : Satellite : Feature : Surface</option> <option value="895">Unspecified : Planet : Satellite : Feature : Surface : Mountain</option> <option value="896">Unspecified : Planet : Satellite : Feature : Surface : Canyon</option> <option value="897">Unspecified : Planet : Satellite : Feature : Surface : Volcanic</option> <option value="898">Unspecified : Planet : Satellite : Feature : Surface : Impact</option> <option value="899">Unspecified : Planet : Satellite : Feature : Surface : Erosion</option> <option value="900">Unspecified : Planet : Satellite : Feature : Surface : Liquid</option> <option value="901">Unspecified : Planet : Satellite : Feature : Surface : Ice</option> <option value="902">Unspecified : Planet : Satellite : Feature : Atmosphere</option> <option value="903">Unspecified : Planet : Ring</option> <option value="904">Unspecified : Interplanetary Body</option> <option value="905">Unspecified : Interplanetary Body : Dwarf planet</option> <option value="906">Unspecified : Interplanetary Body : Comet</option> <option value="907">Unspecified : Interplanetary Body : Comet : Nucleus</option> <option value="908">Unspecified : Interplanetary Body : Comet : Coma</option> <option value="909">Unspecified : Interplanetary Body : Comet : Tail</option> <option value="910">Unspecified : Interplanetary Body : Comet : Tail : Dust</option> <option value="911">Unspecified : Interplanetary Body : Comet : Tail : Gas</option> <option value="912">Unspecified : Interplanetary Body : Asteroid</option> <option value="913">Unspecified : Interplanetary Body : Meteoroid</option> <option value="914">Unspecified : Star</option> <option value="915">Unspecified : Star : Evolutionary Stage : Protostar</option> <option value="916">Unspecified : Star : Evolutionary Stage : Young Stellar Object</option> <option value="917">Unspecified : Star : Evolutionary Stage : Main Sequence</option> <option value="918">Unspecified : Star : Evolutionary Stage : Red Giant</option> <option value="919">Unspecified : Star : Evolutionary Stage : Red Supergiant</option> <option value="920">Unspecified : Star : Evolutionary Stage : Blue Supergiant</option> <option value="921">Unspecified : Star : Evolutionary Stage : White Dwarf</option> <option value="922">Unspecified : Star : Evolutionary Stage : Supernova</option> <option value="923">Unspecified : Star : Evolutionary Stage : Neutron Star</option> <option value="924">Unspecified : Star : Evolutionary Stage : Neutron Star : Pulsar</option> <option value="925">Unspecified : Star : Evolutionary Stage : Neutron Star : Magnetar</option> <option value="926">Unspecified : Star : Evolutionary Stage : Black Hole</option> <option value="927">Unspecified : Star : Type : Variable</option> <option value="928">Unspecified : Star : Type : Variable : Pulsating</option> <option value="929">Unspecified : Star : Type : Variable : Irregular</option> <option value="930">Unspecified : Star : Type : Variable : Eclipsing</option> <option value="931">Unspecified : Star : Type : Variable : Flare Star</option> <option value="932">Unspecified : Star : Type : Variable : Nova</option> <option value="933">Unspecified : Star : Type : Variable : X-Ray Binary (Star)</option> <option value="934">Unspecified : Star : Type : Carbon</option> <option value="935">Unspecified : Star : Type : Brown Dwarf</option> <option value="936">Unspecified : Star : Type : Wolf-Rayet</option> <option value="937">Unspecified : Star : Type : Blue Straggler</option> <option value="938">Unspecified : Star : Type : Exotic</option> <option value="939">Unspecified : Star : Type : Exotic : X-Ray Binary</option> <option value="940">Unspecified : Star : Spectral Type : O</option> <option value="941">Unspecified : Star : Spectral Type : B</option> <option value="942">Unspecified : Star : Spectral Type : A</option> <option value="943">Unspecified : Star : Spectral Type : F</option> <option value="944">Unspecified : Star : Spectral Type : G</option> <option value="945">Unspecified : Star : Spectral Type : K</option> <option value="946">Unspecified : Star : Spectral Type : M</option> <option value="947">Unspecified : Star : Spectral Type : L</option> <option value="948">Unspecified : Star : Spectral Type : T</option> <option value="949">Unspecified : Star : Population : I</option> <option value="950">Unspecified : Star : Population : II</option> <option value="951">Unspecified : Star : Population : III</option> <option value="952">Unspecified : Star : Feature : Photosphere</option> <option value="953">Unspecified : Star : Feature : Photosphere : Granulation</option> <option value="954">Unspecified : Star : Feature : Photosphere : Sunspot</option> <option value="955">Unspecified : Star : Feature : Chromosphere</option> <option value="956">Unspecified : Star : Feature : Chromosphere : Flare</option> <option value="957">Unspecified : Star : Feature : Chromosphere : Facula</option> <option value="958">Unspecified : Star : Feature : Corona</option> <option value="959">Unspecified : Star : Feature : Corona : Prominence</option> <option value="960">Unspecified : Star : Grouping : Binary</option> <option value="961">Unspecified : Star : Grouping : Triple</option> <option value="962">Unspecified : Star : Grouping : Multiple</option> <option value="963">Unspecified : Star : Grouping : Cluster</option> <option value="964">Unspecified : Star : Grouping : Cluster : Open</option> <option value="965">Unspecified : Star : Grouping : Cluster : Globular</option> <option value="966">Unspecified : Star : Circumstellar Material</option> <option value="967">Unspecified : Star : Circumstellar Material : Planetary System</option> <option value="968">Unspecified : Star : Circumstellar Material : Disk</option> <option value="969">Unspecified : Star : Circumstellar Material : Disk : Protoplanetary</option> <option value="970">Unspecified : Star : Circumstellar Material : Disk : Accretion</option> <option value="971">Unspecified : Star : Circumstellar Material : Disk : Debris</option> <option value="972">Unspecified : Star : Circumstellar Material : Outflow</option> <option value="973">Unspecified : Star : Circumstellar Material : Outflow : Solar Wind</option> <option value="974">Unspecified : Star : Circumstellar Material : Outflow : Coronal Mass Ejection</option> <option value="975">Unspecified : Nebula</option> <option value="976">Unspecified : Nebula : Type : Interstellar Medium</option> <option value="977">Unspecified : Nebula : Type : Star Formation</option> <option value="978">Unspecified : Nebula : Type : Planetary</option> <option value="979">Unspecified : Nebula : Type : Supernova Remnant</option> <option value="980">Unspecified : Nebula : Type : Jet</option> <option value="981">Unspecified : Nebula : Appearance : Emission</option> <option value="982">Unspecified : Nebula : Appearance : Emission : H II Region</option> <option value="983">Unspecified : Nebula : Appearance : Reflection</option> <option value="984">Unspecified : Nebula : Appearance : Reflection : Light Echo</option> <option value="985">Unspecified : Nebula : Appearance : Dark</option> <option value="986">Unspecified : Nebula : Appearance : Dark : Molecular Cloud</option> <option value="987">Unspecified : Nebula : Appearance : Dark : Bok Globule</option> <option value="988">Unspecified : Nebula : Appearance : Dark : Proplyd</option> <option value="989">Unspecified : Galaxy</option> <option value="990">Unspecified : Galaxy : Type : Spiral</option> <option value="991">Unspecified : Galaxy : Type : Barred</option> <option value="992">Unspecified : Galaxy : Type : Lenticular</option> <option value="993">Unspecified : Galaxy : Type : Elliptical</option> <option value="994">Unspecified : Galaxy : Type : Ring</option> <option value="995">Unspecified : Galaxy : Type : Irregular</option> <option value="996">Unspecified : Galaxy : Type : Interacting</option> <option value="997">Unspecified : Galaxy : Type : Gravitationally Lensed</option> <option value="998">Unspecified : Galaxy : Size : Giant</option> <option value="999">Unspecified : Galaxy : Size : Dwarf</option> <option value="1000">Unspecified : Galaxy : Activity : Normal</option> <option value="1001">Unspecified : Galaxy : Activity : AGN</option> <option value="1002">Unspecified : Galaxy : Activity : AGN : Quasar</option> <option value="1003">Unspecified : Galaxy : Activity : AGN : Seyfert</option> <option value="1004">Unspecified : Galaxy : Activity : AGN : Blazar</option> <option value="1005">Unspecified : Galaxy : Activity : AGN : Liner</option> <option value="1006">Unspecified : Galaxy : Activity : Starburst</option> <option value="1007">Unspecified : Galaxy : Activity : Ultraluminous</option> <option value="1008">Unspecified : Galaxy : Component : Bulge</option> <option value="1009">Unspecified : Galaxy : Component : Bar</option> <option value="1010">Unspecified : Galaxy : Component : Disk</option> <option value="1011">Unspecified : Galaxy : Component : Halo</option> <option value="1012">Unspecified : Galaxy : Component : Ring</option> <option value="1013">Unspecified : Galaxy : Component : Central Black Hole</option> <option value="1014">Unspecified : Galaxy : Component : Spiral Arm</option> <option value="1015">Unspecified : Galaxy : Component : Dust Lane</option> <option value="1016">Unspecified : Galaxy : Component : Center/Core</option> <option value="1017">Unspecified : Galaxy : Grouping : Pair</option> <option value="1018">Unspecified : Galaxy : Grouping : Multiple</option> <option value="1019">Unspecified : Galaxy : Grouping : Cluster</option> <option value="1020">Unspecified : Galaxy : Grouping : Supercluster</option> <option value="1021">Unspecified : Cosmology</option> <option value="1022">Unspecified : Cosmology : Morphology : Deep Field</option> <option value="1023">Unspecified : Cosmology : Morphology : Large-Scale Structure</option> <option value="1024">Unspecified : Cosmology : Morphology : Cosmic Background</option> <option value="1025">Unspecified : Cosmology : Phenomenon : Lensing</option> <option value="1026">Unspecified : Cosmology : Phenomenon : Gamma Ray Burst</option> <option value="1027">Unspecified : Cosmology : Phenomenon : Dark Matter</option> <option value="1028">Unspecified : Sky Phenomenon</option> <option value="1029">Unspecified : Sky Phenomenon : Night Sky</option> <option value="1030">Unspecified : Sky Phenomenon : Night Sky : Constellation</option> <option value="1031">Unspecified : Sky Phenomenon : Night Sky : Asterism</option> <option value="1032">Unspecified : Sky Phenomenon : Night Sky : Milky Way</option> <option value="1033">Unspecified : Sky Phenomenon : Night Sky : Trail</option> <option value="1034">Unspecified : Sky Phenomenon : Night Sky : Trail : Meteor</option> <option value="1035">Unspecified : Sky Phenomenon : Night Sky : Trail : Star</option> <option value="1036">Unspecified : Sky Phenomenon : Night Sky : Trail : Satellite</option> <option value="1037">Unspecified : Sky Phenomenon : Night Sky : Zodiacal Light</option> <option value="1038">Unspecified : Sky Phenomenon : Night Sky : Zodiacal Light : Gegenschein</option> <option value="1039">Unspecified : Sky Phenomenon : Night Sky : Night glow</option> <option value="1040">Unspecified : Sky Phenomenon : Eclipse</option> <option value="1041">Unspecified : Sky Phenomenon : Eclipse : Solar</option> <option value="1042">Unspecified : Sky Phenomenon : Eclipse : Solar : Total</option> <option value="1043">Unspecified : Sky Phenomenon : Eclipse : Solar : Partial</option> <option value="1044">Unspecified : Sky Phenomenon : Eclipse : Solar : Annular</option> <option value="1045">Unspecified : Sky Phenomenon : Eclipse : Lunar</option> <option value="1046">Unspecified : Sky Phenomenon : Eclipse : Lunar : Total</option> <option value="1047">Unspecified : Sky Phenomenon : Eclipse : Lunar : Partial</option> <option value="1048">Unspecified : Sky Phenomenon : Eclipse : Lunar : Penumbral</option> <option value="1049">Unspecified : Sky Phenomenon : Eclipse : Occultation</option> <option value="1050">Unspecified : Sky Phenomenon : Eclipse : Transit</option> <option value="1051">Unspecified : Sky Phenomenon : Light Phenomenon</option> <option value="1052">Unspecified : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset</option> <option value="1053">Unspecified : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Green flash</option> <option value="1054">Unspecified : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Refractive Distortion</option> <option value="1055">Unspecified : Sky Phenomenon : Light Phenomenon : Sunrise-Sunset : Sun Pillar</option> <option value="1056">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud</option> <option value="1057">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud : Iridescent</option> <option value="1058">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud : Noctilucent</option> <option value="1059">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud : Nacreous</option> <option value="1060">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud : Corona</option> <option value="1061">Unspecified : Sky Phenomenon : Light Phenomenon : Cloud : Glory</option> <option value="1062">Unspecified : Sky Phenomenon : Light Phenomenon : Rainbow</option> <option value="1063">Unspecified : Sky Phenomenon : Light Phenomenon : Rainbow : Moonbow</option> <option value="1064">Unspecified : Sky Phenomenon : Light Phenomenon : Rainbow : Fogbow</option> <option value="1065">Unspecified : Sky Phenomenon : Light Phenomenon : Halo</option> <option value="1066">Unspecified : Sky Phenomenon : Light Phenomenon : Halo : Circle</option> <option value="1067">Unspecified : Sky Phenomenon : Light Phenomenon : Halo : Parhelia</option> <option value="1068">Unspecified : Sky Phenomenon : Light Phenomenon : Halo : Arc</option> <option value="1069">Unspecified : Sky Phenomenon : Light Phenomenon : Ray-Shadow</option> <option value="1070">Unspecified : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Crepuscular ray</option> <option value="1071">Unspecified : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Anti-crepuscular ray</option> <option value="1072">Unspecified : Sky Phenomenon : Light Phenomenon : Ray-Shadow : Earth shadow</option> <option value="1073">Unspecified : Sky Phenomenon : Light Phenomenon : Lightning</option> <option value="1074">Unspecified : Sky Phenomenon : Light Phenomenon : Aurora</option> <option value="1075">Unspecified : Technology</option> <option value="1076">Unspecified : Technology : Observatory</option> <option value="1077">Unspecified : Technology : Observatory : Facility</option> <option value="1078">Unspecified : Technology : Observatory : Telescope</option> <option value="1079">Unspecified : Technology : Observatory : Instrument</option> <option value="1080">Unspecified : Technology : Observatory : Detector</option> <option value="1081">Unspecified : Technology : Spacecraft</option> <option value="1082">Unspecified : Technology : Spacecraft : Orbiter</option> <option value="1083">Unspecified : Technology : Spacecraft : Probe</option> <option value="1084">Unspecified : Technology : Spacecraft : Lander</option> <option value="1085">Unspecified : Technology : Spacecraft : Manned</option> <option value="1086">Unspecified : Technology : Spacecraft : Launch Vehicle</option> <option value="1087">Unspecified : People</option> <option value="1088">Unspecified : People : Scientist</option> <option value="1089">Unspecified : People : Astronaut</option> <option value="1090">Unspecified : People : Other/General</option> </select><br/><span class="helptext">Hold Ctrl+click (Command+click on a Mac) for multiple selection.</span></td></tr> </table> <div class="adv_search_submit"> <input id="adv_submit" type="submit" value="Search"/> </div> </form> </div> <div 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