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#featured-post-5 h4 { font-size: 2.6rem; font-weight: 600; padding-top: 0; } /* -- */ #media_video-3 { background-color: #f5f5f5; padding: 0px 0px 0px 0px; } @media only screen and (max-width: 800px) { .one-half { margin: 0; width: 100%; } } .home h1.entry-title { display: none; margin-bottom: 0; } .home h2.entry-title { display: none; margin-bottom: 0; } .entry-header::after { display: block; margin: 0 auto 0px; padding-bottom: 0px; width: 10%; border-bottom: none; } #text-6 .textwidget { padding-bottom: 5rem; } .home-section-2 { background-color: #f5f5f5; } #text-13 .widget-wrap a { font-weight: 600; color: #00A0B2; } #text-13 .widget-wrap { font-size: 2.6rem; text-align: left; line-height: 150%; color: #999; } /* ---- HOME Highlights ---- */ #highlights { display: flex; flex-wrap: wrap; align-content: flex-start; justify-content: center; margin-top: -80px; padding-bottom: 0%; } #highlights a { flex-grow: 1; flex-basis: 255px; max-width: 300px; margin: 10px; } #highlights img { width: 100%; } #highlights h3 { font-size: 2.6rem; font-weight: 600; } .home-even .wrap, .home-odd .wrap { max-width: 980px; padding-left: 20px; padding-right: 20px; } p.more-from-category { display: none; } .one-half { padding: 3%; background: black; /* For browsers that do not support gradients */ background: linear-gradient(to bottom, rgba(0,0,0,.1), rgba(0,0,0,.8), rgba(0,0,0,.3)); /* Standard syntax (must be last) */ } .two-sixths { padding: 3%; background: black; /* For browsers that do not support gradients */ background: linear-gradient(to bottom, rgba(0,0,0,.1), rgba(0,0,0,.8), rgba(0,0,0,.3)); /* Standard syntax (must be last) */ } .one-sixth { padding: 3%; background: black; /* For browsers that do not support gradients */ background: linear-gradient(to bottom, rgba(0,0,0,.1), rgba(0,0,0,.8), rgba(0,0,0,.3)); /* Standard syntax (must be last) */ } .home-even.home-section-4.widget-area { background-color: #f8f8f8; margin-top: 0; padding-top: 40px; } .home h2 { font-size: 3.5rem; } .home-section-1 p { font-size: 2.0rem; } .home-section-2 h3.widgettitle.widget-title { display: none; } .home-section-2 h1 { font-size: 4.0rem; } .home-section-2.widget-area { margin-bottom: -60pt; } /* ---- HOME News ---- */ .home-section-4.widget-area { background-color: #f5f5f5; margin-top: 2%; margin-bottom: -100pt; } .home-section-4 h3.widgettitle.widget-title { font-size: 4.0rem; margin-bottom: 30pt; } .home-section-4 h4 { margin-top: -30pt; margin-bottom: -30pt; font-size: 2.0rem; } /* ---- HOME Sponsors ---- */ #custom_html-6 > div { display: flex; } ul.sponsor { display: flex; flex-wrap: wrap; list-style-type: none; align-items: center; justify-content: space-around; } li.sponsor-item { flex: 0 0 35%; margin: 20px; list-style-type: none; } li.sponsor-page-item { flex: 0 0 45%; margin: 12px; list-style-type: none; } .entry-content ul > li.sponsor-item { list-style-type: none; } .entry-content ul > li.sponsor-page-item { list-style-type: none; } @media only screen and (max-width: 800px) { ul.sponsor { flex-direction: column; flex-wrap: wrap; flex: 0 1 180px; align-items: center; max-width: 350px } .post-102 .entry-content p { text-align: center; } li.sponsor-item { margin: 30px; } } #custom_html-6 h3 { color: #999; padding-bottom: 20px; } #text-9 h3 { font-size: 3.3rem; color: #999; } /* CATEGORY -- ARCHIVE */ .category h2 { font-size: 18px; } .category article { margin-bottom: auto } .category div.site-inner { margin-bottom: 10%; } .category #genesis-sidebar-primary.sidebar.sidebar-primary.widget-area { margin-top: 160px; } .category-meet-a-desi-member h2 { font-size: 26px; font-weight: 700; padding-top: 20px; border-top: 2px solid #dedede; } .entry-header, .entry-title a { color: #00a0af; text-align: left; padding-bottom: 1%; font-weight: 600; font-size: 2.6rem;} .archive #genesis-sidebar-primary { background-color: #f8f8f8; padding: 0px; margin-top: 15%; } .archive #genesis-sidebar-primary h3.widget-title { font-size: 2rem; font-weight: 500; padding-bottom: 10px; } .archive #genesis-sidebar-primary h4.entry-title { font-size: 3rem; color: #00a0af; margin-bottom: 0; } .archive .sidebar .entry-title a { font-size: 2rem; color: #00a0af; margin-bottom: 0; } /* ARCHIVE PAGES */ .archive-description, .author-box { border-bottom: none; border-top: none; } .archive-title { font-size: 4.667rem; color: #333; font-weight: 500; line-height: 1; margin-bottom: 0; text-align: left; } .archive-description, .author-box { margin-bottom: 30px; } /* SIDEBAR */ .sidebar li { font-family: open-sans, sans-serif; font-size: 100%; line-height: 1.25; margin-bottom: 5%} .sidebar a:visited { color: #999; } ul#menu-blog, ul#menu-blog-spanish, ul#menu-collaboration, ul#menu-education-outreach, ul#menu-for-scientists, ul#menu-gallery, ul#menu-instrument, ul#menu-instrument-catalan, ul#menu-instrument-italian, ul#menu-instrument-spanish, ul#menu-meet-a-member, ul#menu-meet-a-member-spanish, ul#menu-press, ul#menu-science, ul#menu-science-catalan, ul#menu-science-chinese, ul#menu-science-english, ul#menu-science-french, ul#menu-science-georgian, ul#menu-science-german, ul#menu-science-italian, ul#menu-science-korean, ul#menu-science-portuguese, ul#menu-science-spanish { background-color: #f8f8f8; padding: 8%; } #nav_menu-17 { background-color: #f8f8f8; padding: 8%; } #nav_menu-17 h3 { margin-bottom: 0; } /* PAGES */ h1.entry-title { font-size: 4.8rem; margin-bottom: 6%; text-align: left; } div.photo-summary img { margin-bottom: 4%; } /* FULL-WIDTH */ .full-width .content { padding-right: 0px; font-size: 1.8rem; font-family: open-sans, sans-serif; } .full-width h1.entry-title { padding-left: 0px; } /* MISC */ .institute { font-weight: bold; color: #099; } hr { border-bottom: 1px solid #ddd; } /* EXTERNAL LINKS */ a.ext:after, .ext a:after, h3.ext:after { content: ''; display: inline-block; /* float: right; */ margin-left: 10px; width: 12px; height: 12px; background-image: url(/wp-content/uploads/sites/8/2018/06/ext-1.png); background-size: 24px 12px; background-repeat: no-repeat; background-position: -12px 0; } a.ext.white:after, .ext.white a:after, a.ext:hover:after, .ext a:hover:after { background-position:0 0; } .home-middle .ext:after, .entry-title-link.ext:after { content: ''; display: inline-block; width: 12px; height: 12px; background-image: url(images/ext.png); background-size:24px 12px; background-repeat:no-repeat; background-position:-12px 0; margin-left:8px; float:none; } /* ---- Flex Gallery ---- */ .children { display: flex; flex-flow: row wrap; justify-content: space-around; min-height: 200px; } .child { flex: 0 0 auto; list-style-type: none; width: 30%; padding: 25px; border: solid 1px #ddd; font-size: 1.6rem; } .child a { background-color: #fff; display: block; padding: 0; background-repeat: no-repeat; background-size: contain; background-position: center top; color: #333333; text-decoration: none; text-align: center; position: relative; } .child h3 { text-decoration: none; text-align: center; font-size: 2.3rem; font-weight: 600; /* letter-spacing: 3px; */ color: #fff; line-height: 0; margin-bottom: 0; } /* ---- FOOTER ---- */ .social-links img { height: 40px; padding-right: 20px; } a.footer-button { color: white; padding: 16px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 30px 30px 0px; cursor: pointer; border-radius: 8px; border: 1px solid #fff; } .site-footer { display: none; } .footer-widgets a { text-decoration: none; display: inline; } footer .footer-social { margin: 36px 0 24px 0; padding: 0; font-size: 30px; text-align: center; } .copyright { font-size: 70%; padding-top: 20px; } .wp-caption-text { margin-top: 8px; }</style></head> <body class="home page-template-default page page-id-28 custom-header header-image full-width-content genesis-breadcrumbs-hidden genesis-footer-widgets-visible parallax-home" itemscope itemtype="https://schema.org/WebPage"><div class="site-container"><ul class="genesis-skip-link"><li><a href="#genesis-content" class="screen-reader-shortcut"> Skip to main content</a></li><li><a href="#genesis-footer-widgets" class="screen-reader-shortcut"> Skip to footer</a></li></ul><header class="site-header" itemscope itemtype="https://schema.org/WPHeader"><div class="wrap"><div class="title-area"><h1 class="site-title" itemprop="headline"><a href="https://www.desi.lbl.gov/">Dark Energy Spectroscopic Instrument (DESI)</a></h1></div><div class="widget-area header-widget-area"><section id="nav_menu-20" class="widget widget_nav_menu"><div class="widget-wrap"><nav class="nav-header" itemscope itemtype="https://schema.org/SiteNavigationElement"><ul id="menu-main-navigation" class="menu genesis-nav-menu js-superfish"><li id="menu-item-59" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-59"><a href="https://www.desi.lbl.gov/science/" itemprop="url"><span itemprop="name">/ science /</span></a> <ul class="sub-menu"> <li id="menu-item-994" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-994"><a href="https://www.desi.lbl.gov/science/" itemprop="url"><span itemprop="name">science overview</span></a></li> <li id="menu-item-77" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-77"><a href="https://www.desi.lbl.gov/cosmology-and-dark-energy/" itemprop="url"><span itemprop="name">cosmology and dark energy</span></a></li> <li id="menu-item-80" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-80"><a href="https://www.desi.lbl.gov/redshifts-and-distance/" itemprop="url"><span itemprop="name">redshifts and distance</span></a></li> <li id="menu-item-79" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-79"><a href="https://www.desi.lbl.gov/mapping-the-universe/" itemprop="url"><span itemprop="name">mapping the universe</span></a></li> <li id="menu-item-81" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-81"><a href="https://www.desi.lbl.gov/the-desi-science-mission/" itemprop="url"><span itemprop="name">the DESI science mission</span></a></li> <li id="menu-item-82" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-82"><a href="https://www.desi.lbl.gov/the-desi-survey/" itemprop="url"><span itemprop="name">the DESI survey</span></a></li> <li id="menu-item-78" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-78"><a href="https://www.desi.lbl.gov/imaging-surveys/" itemprop="url"><span itemprop="name">imaging surveys</span></a></li> </ul> </li> <li id="menu-item-60" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-60"><a href="https://www.desi.lbl.gov/instrument/" itemprop="url"><span itemprop="name">/ instrument /</span></a> <ul class="sub-menu"> <li id="menu-item-997" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-997"><a href="https://www.desi.lbl.gov/instrument/" itemprop="url"><span itemprop="name">instrument overview</span></a></li> <li id="menu-item-98" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-98"><a href="https://www.desi.lbl.gov/telescope/" itemprop="url"><span itemprop="name">telescope</span></a> <ul class="sub-menu"> <li id="menu-item-1790" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1790"><a href="https://www.desi.lbl.gov/tohono-oodham/" itemprop="url"><span itemprop="name">tohono o’odham</span></a></li> </ul> </li> <li id="menu-item-92" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-92"><a href="https://www.desi.lbl.gov/corrector/" itemprop="url"><span itemprop="name">corrector</span></a></li> <li id="menu-item-95" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-95"><a href="https://www.desi.lbl.gov/focal-plane-system/" itemprop="url"><span itemprop="name">focal plane system</span></a></li> <li id="menu-item-94" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-94"><a href="https://www.desi.lbl.gov/fiber-system/" itemprop="url"><span itemprop="name">fiber system</span></a></li> <li id="menu-item-97" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-97"><a href="https://www.desi.lbl.gov/spectrograph/" itemprop="url"><span itemprop="name">spectrograph</span></a></li> <li id="menu-item-96" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-96"><a href="https://www.desi.lbl.gov/instrument-control-system/" itemprop="url"><span itemprop="name">instrument control system</span></a></li> <li id="menu-item-93" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-93"><a href="https://www.desi.lbl.gov/data-systems/" itemprop="url"><span itemprop="name">data systems</span></a></li> <li id="menu-item-91" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-91"><a href="https://www.desi.lbl.gov/bringing-desi-to-life/" itemprop="url"><span itemprop="name">bringing DESI to life</span></a> <ul class="sub-menu"> <li id="menu-item-212" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-212"><a href="https://www.desi.lbl.gov/bringing-desi-to-life/commissioning-instrument/" itemprop="url"><span itemprop="name">commissioning Instrument</span></a></li> <li id="menu-item-213" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-213"><a href="https://www.desi.lbl.gov/bringing-desi-to-life/protodesi/" itemprop="url"><span itemprop="name">protoDESI</span></a></li> </ul> </li> </ul> </li> <li id="menu-item-61" class="collaboration menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-61"><a href="https://www.desi.lbl.gov/collaboration/" itemprop="url"><span itemprop="name">/ collaboration /</span></a> <ul class="sub-menu"> <li id="menu-item-169" class="ext menu-item menu-item-type-custom menu-item-object-custom menu-item-169"><a href="https://desi.lbl.gov/trac/wiki/PublicPages/Contacts" itemprop="url"><span itemprop="name">DESI team</span></a></li> <li id="menu-item-1020" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1020"><a href="https://www.desi.lbl.gov/collaboration/desi-builders/" itemprop="url"><span itemprop="name">DESI builders</span></a></li> <li id="menu-item-113" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-113"><a href="https://www.desi.lbl.gov/collaborating-institutions/" itemprop="url"><span itemprop="name">collaborating institutions</span></a></li> <li id="menu-item-112" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-112"><a href="https://www.desi.lbl.gov/sponsors/" itemprop="url"><span itemprop="name">sponsors</span></a></li> <li id="menu-item-111" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-111"><a href="https://www.desi.lbl.gov/vendors/" itemprop="url"><span itemprop="name">vendors</span></a></li> <li id="menu-item-1766" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1766"><a href="https://www.desi.lbl.gov/coc/" itemprop="url"><span itemprop="name">code of conduct</span></a></li> <li id="menu-item-876" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-876"><a href="https://www.desi.lbl.gov/policies/" itemprop="url"><span itemprop="name">collaboration policies</span></a></li> </ul> </li> <li id="menu-item-368" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-368"><a href="/category/announcements/" itemprop="url"><span itemprop="name">/ press /</span></a> <ul class="sub-menu"> <li id="menu-item-759" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-759"><a href="https://www.desi.lbl.gov/category/announcements/" itemprop="url"><span itemprop="name">announcements</span></a></li> <li id="menu-item-726" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-726"><a href="https://www.desi.lbl.gov/category/news/" itemprop="url"><span itemprop="name">in the news</span></a></li> <li id="menu-item-727" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-727"><a href="https://www.desi.lbl.gov/category/press-releases/" itemprop="url"><span itemprop="name">press releases</span></a></li> <li id="menu-item-1113" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-1113"><a href="https://www.desi.lbl.gov/category/blog/" itemprop="url"><span itemprop="name">blog</span></a></li> <li id="menu-item-367" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-367"><a href="https://twitter.com/desisurvey?ref_src=twsrc%5Etfw" itemprop="url"><span itemprop="name">tweets by desisurvey</span></a></li> <li id="menu-item-1159" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1159"><a href="https://www.desi.lbl.gov/acknowledgements/" itemprop="url"><span itemprop="name">acknowledgments</span></a></li> </ul> </li> <li id="menu-item-366" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-366"><a href="/photos/" itemprop="url"><span itemprop="name">/ galleries /</span></a> <ul class="sub-menu"> <li id="menu-item-133" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-133"><a href="https://www.desi.lbl.gov/photos/" itemprop="url"><span itemprop="name">image gallery</span></a></li> <li id="menu-item-132" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-132"><a href="https://www.desi.lbl.gov/videos/" itemprop="url"><span itemprop="name">videos</span></a></li> </ul> </li> <li id="menu-item-209" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-209"><a href="/for-scientists/" itemprop="url"><span itemprop="name">/ for scientists /</span></a> <ul class="sub-menu"> <li id="menu-item-3401" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3401"><a href="https://data.desi.lbl.gov/doc" itemprop="url"><span itemprop="name">data releases</span></a></li> <li id="menu-item-208" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-208"><a href="https://www.desi.lbl.gov/for-scientists/instrument-design/" itemprop="url"><span itemprop="name">instrument design</span></a></li> <li id="menu-item-1512" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1512"><a href="https://www.desi.lbl.gov/for-scientists/imaging-data/" itemprop="url"><span itemprop="name">imaging data</span></a></li> <li id="menu-item-3043" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3043"><a href="https://www.desi.lbl.gov/for-scientists/target-selection-and-survey-validation/" itemprop="url"><span itemprop="name">target selection and survey validation</span></a></li> <li id="menu-item-3083" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3083"><a href="https://www.desi.lbl.gov/for-scientists/theory-and-simulations/" itemprop="url"><span itemprop="name">theory and simulations</span></a></li> <li id="menu-item-3084" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3084"><a href="https://www.desi.lbl.gov/for-scientists/other-desi-science/" itemprop="url"><span itemprop="name">other DESI science</span></a></li> <li id="menu-item-1513" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-1513"><a href="https://ui.adsabs.harvard.edu/public-libraries/XCj7bW-vSMaNZVV0C0QyGA" itemprop="url"><span itemprop="name">all DESI papers</span></a></li> <li id="menu-item-393" class="ext menu-item menu-item-type-custom menu-item-object-custom menu-item-393"><a target="_blank" href="https://desi.lbl.gov/trac/login" itemprop="url"><span itemprop="name">team login</span></a></li> <li id="menu-item-2965" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2965"><a href="https://www.desi.lbl.gov/for-scientists/request-a-desi-speaker/" itemprop="url"><span itemprop="name">request a DESI speaker</span></a></li> <li id="menu-item-477" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-477"><a href="https://www.desi.lbl.gov/for-scientists/internal/" itemprop="url"><span itemprop="name">internal</span></a></li> </ul> </li> <li id="menu-item-2141" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-2141"><a href="https://www.desi.lbl.gov/education-outreach/" itemprop="url"><span itemprop="name">/ education & outreach /</span></a> <ul class="sub-menu"> <li id="menu-item-2661" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2661"><a href="https://www.desi.lbl.gov/education-outreach/meet-a-desi-member-all/" itemprop="url"><span itemprop="name">meet a DESI member</span></a></li> <li id="menu-item-2665" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-2665"><a href="https://www.desi.lbl.gov/category/blog/" itemprop="url"><span itemprop="name">blog</span></a></li> <li id="menu-item-3279" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3279"><a href="https://www.desi.lbl.gov/education-outreach/planetarium-show/" itemprop="url"><span itemprop="name">planetarium show</span></a></li> <li id="menu-item-2142" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2142"><a href="https://www.desi.lbl.gov/education-outreach/desi-high/" itemprop="url"><span itemprop="name">DESI high</span></a></li> <li id="menu-item-2666" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2666"><a href="https://www.desi.lbl.gov/education-outreach/interactive-visualizations/" itemprop="url"><span itemprop="name">interactive visualizations</span></a></li> <li id="menu-item-2663" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2663"><a href="https://www.desi.lbl.gov/education-outreach/desi-merch/" itemprop="url"><span itemprop="name">DESI Merch</span></a></li> </ul> </li> </ul></nav></div></section> </div></div></header><div class="site-inner"><div class="content-sidebar-wrap"><h2 class="entry-title" itemprop="headline">home</h2> <main class="content" id="genesis-content"><h2 class="screen-reader-text">Main Content</h2><div class="home-odd home-section-1 widget-area"><div class="full-height"><div class="wrap"><section id="custom_html-11" class="widget_text widget widget_custom_html"><div class="widget_text widget-wrap"><div class="textwidget custom-html-widget"><div class="one-half first"> <h2>The Dark Energy Spectroscopic Instrument (DESI)</h2> The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3D map spanning the nearby universe to 11 billion light years. <br /> <br /> The DESI Survey is being conducted on the Mayall 4-meter telescope at Kitt Peak National Observatory. DESI is supported by the Department of Energy Office of Science to perform this Stage IV dark energy measurement using baryon acoustic oscillations and other techniques that rely on spectroscopic measurements. </div> <div class="clear fix"></div> <div class="two-sixths"> <h4> Latest News from DESI </h4> <h6> New results from the first 3 years of DESI data strengthen hints that dark energy is evolving, with consequences for our understanding of nature and the fate of the Universe. Read more in the <a href="https://newscenter.lbl.gov/2025/03/19/new-desi-results-strengthen-hints-that-dark-energy-may-evolve/" target="_blank" rel="noopener noreferrer">March 2025 BerkeleyLab Press Release.</a> Videos discussing the results are available at the <a href="https://www.youtube.com/@DESISurvey/" target="_blank" rel="noopener noreferrer">DESI YouTube channel.</a> Further details are available in our <a href="https://www.desi.lbl.gov/2025/03/19/desi-dr2-results-march-19-guide/" target="_blank" rel="noopener noreferrer">guide to the publications</a> reporting these results. The papers themselves are available <a href="https://data.desi.lbl.gov/doc/papers/" target="_blank" rel="noopener noreferrer">here.</a> </h6><h6> A new DESI data release is also now available for all to explore. The largest dataset of its kind ever shared, it contains information on 18.7 million galaxies, quasars, and stars. Read more in <a href="https://newscenter.lbl.gov/2025/03/19/desi-opens-access-to-the-largest-3d-map-of-the-universe-yet/" target="_blank" rel="noopener noreferrer">a companion BerkeleyLab Press Release.</a> </h6> </div> <div class="one-sixth"> <h5> <font size="2em"> DESI Science<br /> <a href="https://www.desi.lbl.gov/es/science-spanish"> en Español</a>,<br /> <a href="https://www.desi.lbl.gov/fr/science-french"> en Français</a>,<br /> <a href="https://www.desi.lbl.gov/ko/science-korean"> 한국어로</a>,<br /> <a href="https://www.desi.lbl.gov/zh/science-chinese"> 简体中文</a>,<br /> <a href="https://www.desi.lbl.gov/ka/science-georgian"> ქართული</a>,<br /> <a href="https://www.desi.lbl.gov/pt/science-portuguese"> em Português</a>,<br /> <a href="https://www.desi.lbl.gov/de/science-german"> auf Deutsch</a>,<br /> <a href="https://www.desi.lbl.gov/ca/science-catalan"> en Català</a>,<br /> <a href="https://www.desi.lbl.gov/it/science-italian"> in Italiano</a>. </font> </h5> </div> <div class="two-sixths"> <h4> <em><a href="https://www.desi.lbl.gov/education-outreach/planetarium-show/">5000 Eyes: Mapping the Universe with DESI</a></em> is out now! </h4> <h6> DESI's very own planetarium show is available for free to all planetariums. See the <a href="https://www.youtube.com/watch?v=GeggpUt4Dec" target="_blank" rel="noopener noreferrer">trailer</a> and find more information <a href="https://www.desi.lbl.gov/education-outreach/planetarium-show/">here</a>. </h6> <h6> <font size="3em"> Translations in French, Spanish, Mandarin, and German are now available. </font> </h6> </div></div></div></section> </div></div></div><div class="home-even home-section-2 widget-area"><div class="wrap"><section id="custom_html-3" class="widget_text widget widget_custom_html"><div class="widget_text widget-wrap"><h3 class="widgettitle widget-title">Highlights</h3> <div class="textwidget custom-html-widget"><div id="highlights"> <a href="https://www.desi.lbl.gov/education-outreach/meet-a-desi-member-all/"><h3>MEET A MEMBER</h3><img src="/wp-content/uploads/sites/8/2018/06/member-1.png" alt="">   </a> <a href="/science/"><h3>SCIENCE</h3><img src="/wp-content/uploads/sites/8/2018/06/science.png" alt="">  </a> <a href="https://www.desi.lbl.gov/category/blog/"><h3>BLOG</h3><img src="/wp-content/uploads/sites/8/2018/06/instrument-1.jpg" alt=""> </a> </div></div></div></section> <section id="media_video-3" class="widget widget_media_video"><div class="widget-wrap"><h3 class="widgettitle widget-title">DESI Begins</h3> <div style="width:100%;" class="wp-video"> <video class="wp-video-shortcode" id="video-28-1" preload="metadata" controls="controls"><source type="video/vimeo" src="https://vimeo.com/422889846?loop=0&_=1" /><a href="https://vimeo.com/422889846?loop=0">https://vimeo.com/422889846?loop=0</a></video></div></div></section> <section id="featured-post-5" class="widget featured-content featuredpost"><div class="widget-wrap"><h3 class="widgettitle widget-title">Latest Blog Posts</h3> <article class="post-3973 post type-post status-publish format-standard has-post-thumbnail category-blog category-feature-on-homepage entry" aria-label="At the Big Reveal: DESI’s December 2024 Unblinding Results"><a href="https://www.desi.lbl.gov/2025/03/19/at-the-big-reveal-desis-december-2024-unblinding-results/" class="alignleft" aria-hidden="true" tabindex="-1"><img width="500" height="500" src="https://www.desi.lbl.gov/wp-content/uploads/sites/8/2025/03/WoooWaaaaa-500x500.png" class="entry-image attachment-post" alt="" itemprop="image" decoding="async" loading="lazy" /></a><header class="entry-header"><h4 class="entry-title" itemprop="headline"><a href="https://www.desi.lbl.gov/2025/03/19/at-the-big-reveal-desis-december-2024-unblinding-results/">At the Big Reveal: DESI’s December 2024 Unblinding Results</a></h4></header><div class="entry-content"><p>by Gillian Beltz-Mohrmann (Argonne National Laboratory) 19 March 2025 The first known blind experiment was conducted by the French Royal Commission on Animal Magnetism in 1784. In the experiment, the researchers literally blindfolded participants and asked them to identify objects that the experimenters had previously filled with “vital fluid,” which none of the participants were […]</p> </div></article><article class="post-3979 post type-post status-publish format-standard has-post-thumbnail category-blog category-feature-on-homepage entry" aria-label="DESI DR2 Results: March 19 Guide"><a href="https://www.desi.lbl.gov/2025/03/19/desi-dr2-results-march-19-guide/" class="alignleft" aria-hidden="true" tabindex="-1"><img width="500" height="500" src="https://www.desi.lbl.gov/wp-content/uploads/sites/8/2025/03/DR2-cosmo-annotation-500x500.png" class="entry-image attachment-post" alt="" itemprop="image" decoding="async" loading="lazy" /></a><header class="entry-header"><h4 class="entry-title" itemprop="headline"><a href="https://www.desi.lbl.gov/2025/03/19/desi-dr2-results-march-19-guide/">DESI DR2 Results: March 19 Guide</a></h4></header><div class="entry-content"><p>On March 19, DESI released a set of papers providing the measurements and interpretation of Baryon Acoustic Oscillations (BAO) based on Data Release 2 (DR2) – the first three years of survey data. This page contains a guide to the publications and main results. The papers are available here and on arXiv. In addition to […]</p> </div></article><article class="post-3963 post type-post status-publish format-standard has-post-thumbnail category-blog category-feature-on-homepage entry" aria-label="Closing Our Eyes to Truly See — “Blinding” in DESI’s Analysis of Its Cosmological Measurements"><a href="https://www.desi.lbl.gov/2025/03/10/closing-our-eyes-to-truly-see-blinding-in-desis-analysis-of-its-cosmological-measurements/" class="alignleft" aria-hidden="true" tabindex="-1"><img width="500" height="500" src="https://www.desi.lbl.gov/wp-content/uploads/sites/8/2025/03/Berkeley2019Blinding-500x500.jpg" class="entry-image attachment-post" alt="" itemprop="image" decoding="async" loading="lazy" /></a><header class="entry-header"><h4 class="entry-title" itemprop="headline"><a href="https://www.desi.lbl.gov/2025/03/10/closing-our-eyes-to-truly-see-blinding-in-desis-analysis-of-its-cosmological-measurements/">Closing Our Eyes to Truly See — “Blinding” in DESI’s Analysis of Its Cosmological Measurements</a></h4></header><div class="entry-content"><p>Joan Najita (NOIRLab) 10 March 2025 “Perhaps only in a world of the blind will things be what they truly are.” — José Saramago, Blindness We’re all human. Science is a human endeavor, carried out by humans with all their imagination, creativity…and biases. Sometimes we explore the Universe without expectations, but often we have an […]</p> </div></article></div></section> <section id="custom_html-12" class="widget_text widget widget_custom_html"><div class="widget_text widget-wrap"><div class="textwidget custom-html-widget"><h1><strong><a href="https://twitter.com/desisurvey?ref_src=twsrc%5Etfw">Tweets by desisurvey</a></strong></h1></div></div></section> </div></div><div class="home-odd home-section-3 widget-area"><div class="wrap"><section id="text-18" class="widget widget_text"><div class="widget-wrap"> <div class="textwidget"></div> </div></section> </div></div><div class="home-even home-section-4 widget-area"><div class="wrap"><section id="custom_html-14" class="widget_text widget widget_custom_html"><div class="widget_text widget-wrap"><h3 class="widgettitle widget-title">Latest Press Releases</h3> <div class="textwidget custom-html-widget"><p style="text-align: left"><a href="https://newscenter.lbl.gov/2023/06/13/desi-early-data-release-holds-nearly-two-million-objects/" target="_blank" rel="noopener noreferrer"><strong>DESI Early Data Release Holds Nearly Two Million Objects</strong></a><br /><em>Lawrence Berkeley National Laboratory</em>, 13 June 2023</p> <p style="text-align: left"><a href="https://newscenter.lbl.gov/2023/02/27/new-desi-planetarium-show-to-premier-in-2023/" target="_blank" rel="noopener noreferrer"><strong>New DESI Planetarium Show to Premiere in 2023</strong></a><br /> <em>Lawrence Berkeley National Laboratory</em>, 27 February 2023</p> <p style="text-align: left"><a href="https://www.desi.lbl.gov/2022/10/07/desi-resumes-cataloguing-the-cosmos-lawrence-berkeley-national-laboratory-10-7-2022/" target="_blank" rel="noopener noreferrer"><strong>DESI Resumes Cataloguing the Cosmos</strong></a><br /> <em>Lawrence Berkeley National Laboratory</em>, 7 October 2022</p> <p style="text-align: left"><a href="https://www.desi.lbl.gov/2022/01/13/dark-energy-spectroscopic-instrument-creates-largest-3d-map-of-the-cosmos/" target="_blank" rel="noopener noreferrer"><strong>Dark Energy Spectroscopic Instrument Creates Largest 3D Map of the Cosmos</strong></a><br /> <em>Lawrence Berkeley National Laboratory</em>, 13 January 2022</p> <br /> </div></div></section> </div></div><div class="home-odd home-section-5 widget-area"><div class="wrap"><section id="text-20" class="widget widget_text"><div class="widget-wrap"> <div class="textwidget"></div> </div></section> </div></div></main></div></div><div class="footer-widgets" id="genesis-footer-widgets"><h2 class="genesis-sidebar-title screen-reader-text">Footer</h2><div class="wrap"><div class="widget-area footer-widgets-1 footer-widget-area"><section id="custom_html-4" class="widget_text widget widget_custom_html"><div class="widget_text widget-wrap"><div class="textwidget custom-html-widget"><div> <p> <a href="https://desi.lbl.gov/trac/login" 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