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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head>  <script async src="https://www.googletagmanager.com/gtag/js?id=UA-136660976-1"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-136660976-1'); </script> <script language="javascript" id="_fed_an_ua_tag" src="https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=NASA"></script> <script defer data-domain="soho.nascom.nasa.gov" src="https://plausible.io/js/script.js"></script> <title>Solar and Heliospheric Observatory Homepage</title>  <meta http-equiv="Cache-Control" content="no-cache"> <meta http-equiv="Pragma" content="no-cache"> <link rel="stylesheet" type="text/css" href="/css/sohohome.css"> </head> <body> <div id="page_container"> <div id="top_nav"><div class="cur_date">24 November 2024 - Mission Day: 10586 - DOY: 329</div> <div class="top_links"><table width="100%"> <tr><td align="right"><a href="/community/localinfo.html">About us</a>                 </td> <td class="vertical-align:bottom;"> </td></tr></table></div></div> <div id="main_nav"> <table width="100%" cellpadding="0" cellspacing="0"> <tr><td colspan="11"><img src="/imgs/soho_top.jpg" width="850" height="139" alt="SOHO" /></td></tr> <tr><td class="top_space"> </td> <td class="main_buttons_hl"><a class="main_links_hl" href="/home.html">home</a></td> <td class="main_buttons"><a class="main_links" href="/about/about.html">about</a></td> <td class="main_buttons"><a class="main_links" href="/gallery/">gallery</a></td> <td class="main_buttons"><a class="main_links" href="/data/data.html">data/archive</a></td> <td class="main_buttons"><a class="main_links" href="/operations/operations.html">operations</a></td> <td class="main_buttons"><a class="main_links" href="/publications/publications.html">publications</a></td> <td class="main_buttons"><a class="main_links" href="/newsroom/newsroom.html">newsroom</a></td> <td class="main_buttons"><a class="main_links" href="/classroom/classroom.html">classroom</a></td> <td class="main_buttons"><a class="main_links" href="/community/">community</a></td> <td class="top_space"> </td></tr></table></div> <div id="content"> <div id="content_home_left">  <div class="line_separator"> </div> <div class="home_left_img"><a class="home_more_link" href="/pickoftheweek/"> <img src="/pickoftheweek/pow_thumb.jpg" width="125" height="125" alt="Pick of the Week" /></a></div> <div class="home_left_text"> <h1 class="home_red_heading">Solar Pick</blink></h1> <h1 class="home_black_heading">SOHO sees comet Tsuchinshan-ATLAS (October 14, 2024)</b></h1> <p class="home_left_p"> C/2023 A3 (Tsuchinshan-ATLAS) was discovered by the Purple Mountain Observatory... <p class="home_left_p" style="text-align:right;color:#E14800;"> <a class="home_more_link" href="http://soho.nascom.nasa.gov/pickoftheweek/">more</a> »</p> </div>  <div class="line_separator"> </div> <div class="home_left_img"><a class="home_more_link" href="/pickoftheweek/old/08apr2024/"> <img src="/pickoftheweek/old/08apr2024/pow_thumb.jpg" width="125" height="125" alt="Pick of the Week" /></a></div> <div class="home_left_text"> <h1 class="home_red_heading">Solar Pick</blink></h1> <h1 class="home_black_heading">2024 TOTAL ECLIPSE (APRIL 8, 2024)</b></h1> <p class="home_left_p"> The April 8, 2024, total solar eclipse crossed North America, passing over Mexico, the United States, and Canada... <p class="home_left_p" style="text-align:right;color:#E14800;"> <a class="home_more_link" href="http://soho.nascom.nasa.gov/pickoftheweek/old/08apr2024/">more</a> »</p> </div>  <div class="line_separator"> </div> <div class="home_left_img"> <a class="home_more_link"href="/hotshots/2010_12_14/"><img width=125 height=100 src="/hotshots/2010_12_14/JHV_Screenshot_SOHO_overlay2_thumb.jpg" alt="JHelioviewer"></a> </div> <div class="home_left_text"> <h1 class="home_red_heading">SPOTLIGHT</h1> <h1 class="home_black_heading"><b> JHelioviewer: A new way of looking at the Sun </b></h1> <p class="home_left_p"> JHelioviewer is new visualization software that enables everybody, anywhere to explore the Sun... </p> <p class="home_left_p" style="text-align:right;color:#E14800;"> <a class="home_more_link" href="/hotshots/2010_12_14/" >read the story</a> »</p> </div> <div class="line_separator"> </div>  </div> <div id="content_home_right"> <table width="100%" cellpadding="0" cellspacing="0" > <tr> <td class="home_right_header"><p class="home_right_header_p">the sun now</p></td> <td class="home_right_space"> </td> <td class="home_right_header"> <p class="home_right_header_p">sunspots</p></td> </tr> <tr> <td class="home_right_imges"> <a href="/data/realtime-images.html"> <img src="/data/realtime/eit_171/512/latest.jpg" width="101" height="101" alt="SOHO" /></a> </td> <td class="home_right_space"> </td> <td class="home_right_imges"> <a href="/sunspots/"> <img src="/data/synoptic/sunspots/mdi_sunspots.jpg" width="101" height="101" alt="SOHO" /></a>  </td> </tr> <tr> <td class="home_right_header"><p class="home_right_header_p">spaceweather</p></td> <td class="home_right_space"> </td> <td class="home_right_header"><p class="home_right_header_p">estimated Kp</p></td> </tr> <tr> <td class="home_right_imges"><a href="/spaceweather/"><img src="data/realtime/c2/512/latest.jpg" width="101" height="101" alt="spaceweather" /></a></td> <td class="home_right_space"> </td> <td class="home_right_imges"><a href="https://www.swpc.noaa.gov/products/planetary-k-index" target="blank"><img src="/data/synoptic/sel/satenv-small.gif" width="101" height="101" alt="SOHO" /></a></td> </tr> </table>  <table border=0 style="margin-top:1px;" width="100%" cellpadding="0" cellspacing="0" > <tr><td class="home_right_header" colspan="2"><p class="home_right_header_p">solar wind</p></td></tr> <tr> <td rowspan="3"><a href="https://space.umd.edu/pm/" target="_blank" alt="Solar wind data"> <img src="/imgs/sws_dial_4.png" width=160 height=74></a></td> <td class="home_right_solarwindtxt" style="text-align:center"><a style="color:white; text-decoration:none" href="https://space.umd.edu/pm/" target="_blank"><b>DOY:329 22:52 UT</b></a></td> </tr> <tr> <td class="home_right_solarwindtxt" style="vertical-align:middle"><a style="color:white; text-decoration:none" href="https://space.umd.edu/pm/" target="_blank">Speed: <a style="color:#FFCC00">432.3 km/s </a></font></td> </tr> <tr> <td class="home_right_solarwindtxt" style="vertical-align:top"><a style="color:white; text-decoration:none" href="https://space.umd.edu/pm/" target="_blank">Density: <font style="color:#FFCC00">8.77 p/cm<sup>3</sup> </font></a></td> </tr> </table>  <table style="margin-top:1px;" width="100%" cellpadding="0" cellspacing="0" > <tr><td colspan="3" class="home_right_header"><p class="home_right_header_p">best of soho</p></td></tr> <tr> <td class="home_right_best_of_soho"><a class="content_link" href="/gallery/bestofsoho.html" alt="SOHO"><img src="/gallery/SolarCorona/random/las022_thumb.jpg"></A></td> <td class="home_right_best_of_soho"><a class="content_link" href="/gallery/bestofsoho.html" alt="SOHO"><img src="/gallery/Helioseismology/random/gol004_thumb.jpg"></a> </td> <td class="home_right_best_of_soho"><a class="content_link" href="/gallery/bestofsoho.html" alt="SOHO"><img src="/gallery/Particle/random/x06.jpg"></A></td> </tr> </table> </div> <div style="clear: both; height: 0px; font-size: 0px; line-height: 1px;"> </div></div> <div id="content_bottom"> <div class="home_wide_text"> <table border="0" width="600"> <tr><td></td></tr> <tr> <td align=left colspan=3 class="table_black_heading">ALSO DON'T MISS </td> </tr> <tr> <td width="5"></td><td valign=top class="home_table_narrow"> <ul>  <li class="content"><span> <a class="home_more_link" style="text-transform:capitalize;" href="/outreach/" target="_blank">Outreach Spotlight</a> <li class="content"><span> Science@ESA <a class="home_more_link" style="text-transform:capitalize;" href="http://astronomy2009.esa.int/science-e/www/object/index.cfm?fobjectid=46594" target="_blank">Vodcasts</a> <li class="content"><span> <a class="home_more_link" style="text-transform:capitalize;" href="http://svs.gsfc.nasa.gov/vis/a000000/a003500/a003595/" target="_blank">Sentinels of the Heliosphere</a> (<a class="home_more_link" style="text-transform:capitalize; href="/Sentinel/Sentinels_H264_1280x720_30.mov" target="_blank">QT</a>, <a class="home_more_link" style="text-transform:capitalize; href="/Sentinel/Sentinels_H264_1280x720_30.mpg" target="_blank">MPEG</a>)</li>   </ul> </td> <td valign=top class="home_table_narrow"> <ul> <li class="content"><span><a class="home_more_link" style="text-transform:capitalize;" href="/whatsnew/">What's New</a> </span></li> <li class="content"><span><a class="home_more_link" style="text-transform:capitalize;" href="/freestuff/">Free Stuff</a> </span></li> <li class="content"><span><a class="home_more_link" style="text-transform:capitalize;" href="/sunworks/exhibit.html">SunWorks Exhibit</a> </span></li> </ul> </td> </tr> </table> </div> </div> <div id="bottom_nav"> <div class="home_site_is"> <p class="home_bottom_p">• <a class="bottom_links" href="http://soho.esac.esa.int/">European Site</a> • <a class="bottom_links" href="http://sohowww.nascom.nasa.gov/">US Site</a></p> <p class="home_bottom_space"> </p> <p class="home_bottom_p">Feedback & Comments:<a class="bottom_links" href="http://sohowww.nascom.nasa.gov/contact/webmaster.html"> SOHO Webmaster</a></p> <p class="home_bottom_p">Last modification: July 27, 2020 </p> </div> <div class="nasa"><a href="http://www.nasa.gov/"><img src="/imgs/nasa.jpg" width="66" height="70" alt="SOHO" /></a></div> <div class="home_and">and</div> <div class="esa"><a href="http://www.esa.int/"><img src="/imgs/esa.jpg" width="100" height="70" alt="SOHO" /></a></div> <div class="home_soho_is">SOHO is a project of international cooperation between</div> </div> </div> </body> </html>