{"id":554782,"date":"2026-09-28T14:00:00","date_gmt":"2026-09-28T04:00:00","guid":{"rendered":"https:\/\/science.nasa.gov\/earth\/earth-observatory\/uncovering-the-valleys-hidden-below-greenlands-ice\/"},"modified":"2026-09-28T14:00:00","modified_gmt":"2026-09-28T04:00:00","slug":"uncovering-the-valleys-hidden-below-greenlands-ice","status":"publish","type":"post","link":"https:\/\/www.vibewire.com.au\/?p=554782","title":{"rendered":"Uncovering the Valleys Hidden Below Greenland\u2019s Ice"},"content":{"rendered":"<div id=\"\" class=\"hds-module hds-module-full alignfull wp-block-nasa-blocks-secondary-navigation\">\n<div class=\"hds-secondary-navigation-wrapper z-top width-100 padding-0\">\n<div id=\"\" class=\"hds-secondary-navigation width-full border-bottom-1px text-center hds-color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-hdsnav\"><button type=\"button\" class=\"hds-secondary-nav-mobile-button display-flex tablet:display-flex desktop:display-none 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Us<\/a><\/li>\n<\/ul>\n<\/li>\n<li class=\"usa-nav__primary-item \"><a class=\"usa-nav__link\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/search\/\" rel=\"noopener\">Search<\/a><\/li>\n<\/ul>\n<\/nav>\n<\/div>\n<div class=\"hds-secondary-navigation-menu-spacer\">\u00a0<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"\" class=\"hds-media hds-module wp-block-image\">\n<div class=\"margin-left-auto margin-right-auto nasa-block-align-wide\">\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \" style=\"--hds-image-contain-bg:#ffffff;\"><a href=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland%E2%80%99s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=1440&#038;h=1847&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1440\" height=\"1847\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland%E2%80%99s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=1440&#038;h=1847&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"A large map on the left shows Greenland\u2019s bedrock topography that lies below the ice sheet. A column of smaller maps on the right zooms in on several features, including long, straight valleys on the west-central part of the island. Other insets show a megacanyon, as well as valleys radiating outward from the highlands.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"eager\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=1440&#038;h=1847&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1440w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=234&#038;h=300&#038;fit=crop&#038;crop=faces%2Cfocalpoint 234w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=768&#038;h=985&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=798&#038;h=1024&#038;fit=crop&#038;crop=faces%2Cfocalpoint 798w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=1198&#038;h=1537&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1198w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=312&#038;h=400&#038;fit=crop&#038;crop=faces%2Cfocalpoint 312w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=468&#038;h=600&#038;fit=crop&#038;crop=faces%2Cfocalpoint 468w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=702&#038;h=900&#038;fit=crop&#038;crop=faces%2Cfocalpoint 702w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026.jpg?w=936&#038;h=1201&#038;fit=crop&#038;crop=faces%2Cfocalpoint 936w\" sizes=\"auto, (max-width: 1440px) 100vw, 1440px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">A newly developed method for mapping the bedrock beneath Greenland\u2019s ice sheet reveals the island\u2019s hidden topography. Among the most striking finds are long, straight valleys in the west-central region, some mapped for the first time and others extending farther inland than previously known (inset 3).<\/div>\n<div class=\"hds-credits\">NASA Earth Observatory\/Lauren Dauphin, based on data from <em><a href=\"https:\/\/doi.org\/10.1029\/2026GL122028\" rel=\"noopener\">Chartrand et al<\/a><\/em>.<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">Greenland is capped with a vast ice sheet that <a href=\"https:\/\/nsidc.org\/ice-sheets-today\/about-project#:~:text=The%20Greenland%20Ice,miles)%20of%20ice.\" rel=\"noopener\">spans<\/a> 1.7 million square kilometers (656,000 square miles) and measures more than 3 kilometers (1.9 miles) at its thickest point. Below all this ice lies a landscape human eyes have never seen directly. But a newly developed method for mapping this hidden bedrock has produced the most detailed and accurate view of it yet.<\/p>\n<p class=\"wp-block-paragraph\">The new map reveals an expansive network of valleys carved into the surface beneath the Greenland Ice Sheet. Many of the features formed well before most of the ice above them existed, offering new context for the island\u2019s geologic history\u2014and potentially helping scientists refine projections of the ice sheet\u2019s future. Scientists described the newly mapped valleys in a NASA-led <a href=\"https:\/\/doi.org\/10.1029\/2026GL122028\" rel=\"noopener\">paper published in <em>Geophysical Research Letters<\/em><\/a>.<\/p>\n<p class=\"wp-block-paragraph\">The map, shown above, was derived from a method called Ice Flow Perturbation Analysis. As ice flows over a valley or ridge, the topography leaves a faint signature on the ice surface. Satellites map the ice surface in fine detail, and scientists can use these subtle bumps and dips to infer the shape of the landscape buried below. The work aims to improve future versions of <a href=\"https:\/\/www.earthdata.nasa.gov\/data\/catalog\/nsidc-cprd-idbmg4-6\" rel=\"noopener\">BedMachine Greenland<\/a>, a high-resolution dataset of the terrain beneath the ice sheet.<\/p>\n<p class=\"wp-block-paragraph\">Using the technique, researchers manually mapped 1,943 subglacial valleys beneath the Greenland Ice Sheet, about a third of which are newly identified. About half of the valleys included in BedMachine Greenland, primarily near the ice sheet\u2019s edge, are now known to extend farther inland than that map indicates, in some cases by hundreds of kilometers.<\/p>\n<p class=\"wp-block-paragraph\">Some aspects of the new map align with the current understanding of how Greenland\u2019s landscapes formed. For instance, many of the valleys appear to begin in the southern and eastern highlands, where the ice sheet is thought to have first formed. Near the eastern highlands, the map reveals a mountain range beneath the ice, with interconnected valleys and relief that increases toward the coast. These alpine-style landforms may have survived under the ice since at least the Pliocene.<\/p>\n<p class=\"wp-block-paragraph\">Other aspects of the topography are more puzzling. The analysis indicates numerous valleys, especially in the west-central region, that are long, straight, and consistently aligned in a southwest-northeast direction. This orientation suggests a tectonic influence, generating preferential pathways along which water could flow and valleys could form. \u201cThat\u2019s a riddle to us,\u201d said Joe MacGregor, a NASA cryospheric scientist and co-author of the study. \u201cGreenland is justifiably usually treated as a rigid block of old rock that is simply translated as needed to accommodate the motion and interactions of other tectonic plates.\u201d<\/p>\n<p class=\"wp-block-paragraph\">Separately, the angles at which the valleys branch offer another insight into their origin. Their relatively wide branching angles suggest that surface water didn\u2019t act alone; instead, a widespread groundwater network\u2014seeping upward and eroding the surrounding rock\u2014likely helped carve the valleys before the ice sheet formed.<\/p>\n<p class=\"wp-block-paragraph\">Mapping these valleys matters for understanding the ice sheet, which has continued to dramatically reshape the landscape. Ice flow concentrates in valleys, where it forms glaciers that eventually calve into fjords at the periphery of the ice sheet. This creates a reinforcing cycle: ice funneling through a valley gets thicker, thicker ice flows faster, and faster flow carves the valley even deeper.<\/p>\n<p class=\"wp-block-paragraph\">This carving power is especially evident along western Greenland. MacGregor likened it to the glacially incised landscape at Yosemite, with Greenland\u2019s western coast resembling, as he put it, \u201cEl Capitan after El Capitan.\u201d<\/p>\n<p class=\"wp-block-paragraph\">Studying the valleys also matters for the ice sheet\u2019s future. Because the relationship between ice flow and valleys is well understood, scientists expect that as the ice sheet retreats, flow will continue to concentrate wherever the valleys already are. \u201cThe better we understand the topography now,\u201d MacGregor said, \u201cthe better sense we\u2019ll have of what it will look like in the longer term\u2014beyond the next decade or two\u2014as faster ice flow propagates into Greenland\u2019s interior.\u201d<\/p>\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p class=\"wp-block-paragraph\"><em>NASA Earth Observatory map by Lauren Dauphin using data from <a href=\"https:\/\/doi.org\/10.1029\/2026GL122028\" rel=\"noopener\">Chartrand et al<\/a>. Story by Kathryn Hansen.<\/em><\/p>\n<div id=\"\" class=\"hds-featured-file-list bg-spacesuit-white padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module align wp-block-nasa-blocks-file-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"grid-row width-full margin-bottom-4\">\n<div class=\"grid-col-12 desktop:grid-col-6 margin-bottom-2 desktop:margin-bottom-0\">\n<h2 class=\"heading-22\">\n\t\t\t\t\tDownloads\t\t\t\t<\/h2>\n<\/p>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<div class=\"desktop:grid-col display-flex flex-align-center desktop:flex-justify-end\">\n\t\t\t\t\t\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-list-row hds-file-list-row\">\n<div class=\"hds-list-thumbnail hds-file-list-thumbnail\">\n<div class=\"hds-list-thumbnail-inner hds-file-list-thumbnail-inner hds-cover-wrapper\">\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"3928\" height=\"7080\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland%E2%80%99s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=3928&#038;h=7080&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A large map on the left shows Greenland\u2019s bedrock topography that lies below the ice sheet. A column of smaller maps on the right zooms in on several features, including long, straight valleys on the west-central part of the island. Other insets show a megacanyon, as well as valleys radiating outward from the highlands.\" style=\"transform: scale(1.2); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" data-video-loop=\"\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=3928&#038;h=7080&#038;fit=crop&#038;crop=faces%2Cfocalpoint 3928w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=166&#038;h=299&#038;fit=crop&#038;crop=faces%2Cfocalpoint 166w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=768&#038;h=1384&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=568&#038;h=1024&#038;fit=crop&#038;crop=faces%2Cfocalpoint 568w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=852&#038;h=1536&#038;fit=crop&#038;crop=faces%2Cfocalpoint 852w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=1136&#038;h=2048&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1136w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=222&#038;h=400&#038;fit=crop&#038;crop=faces%2Cfocalpoint 222w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=333&#038;h=600&#038;fit=crop&#038;crop=faces%2Cfocalpoint 333w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=499&#038;h=899&#038;fit=crop&#038;crop=faces%2Cfocalpoint 499w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=666&#038;h=1200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 666w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland\u2019s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg?w=1110&#038;h=2001&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1110w\" sizes=\"auto, (max-width: 3928px) 100vw, 3928px\" \/><\/figure>\n<\/div>\n<\/div>\n<div class=\"hds-list-details\">\n<div class=\"hds-list-name hds-file-list-name\">\n<h2 class=\"heading-22\">Bedrock Map<\/h2>\n<\/p>\n<\/div>\n<div class=\"hds-list-meta\">\n<div class=\"hds-list-meta-item hds-list-date hds-file-list-date\">\n<p class=\"p-sm\">\n<\/div>\n<div class=\"hds-list-meta-item hds-file-list-filetype\">\n<p class=\"p-sm\">JPEG (11.10 MB)<\/p>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-list-cta hds-file-list-download\">\n\t\t\t\t\t<a aria-label=\"Download Bedrock Map\" href=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/esd\/eo\/images\/iotd\/2026\/uncovering-the-valleys-hidden-below-greenland%E2%80%99s-ice\/greenlandvalleynet_ifpa_2026_lrg.jpg\"  download rel=\"noopener\"><br \/>\n\t\t\t\t\t\t<svg aria-hidden=\"true\" width=\"32\" height=\"32\" viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"16\" cy=\"16.0001\" r=\"16\" fill=\"#1C67E3\"\/><path d=\"M15.2357 8.00007L15.2357 16.4829L11.9504 13.4078L10.8801 14.4094L16.0001 19.2001L21.1201 14.4094L20.0499 13.4078L16.7645 16.4829L16.7645 8.00007L15.2357 8.00007Z\" fill=\"white\"\/><path fill-rule=\"evenodd\" clip-rule=\"evenodd\" d=\"M9.6 20.8001V18.4001H8V22.4001H24V18.4001H22.4V20.8001H9.6Z\" fill=\"white\"\/><\/svg><br \/>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">References &#038; Resources<\/h2>\n<ul class=\"wp-block-list\">\n<li>Chartrand, A. M., <em>et al<\/em>. (2026) <a href=\"https:\/\/doi.org\/10.1029\/2026GL122028\" rel=\"noopener\">A Vast Valley Network Beneath the Greenland Ice Sheet<\/a>. <em>Geophysical Research Letters<\/em>, 53 (13), e2026GL122028.<\/li>\n<\/ul>\n<div id=\"\" class=\"hds-content-lists-inner hds-module hds-module-full alignfull wp-block-nasa-blocks-content-lists\">\n<div id=\"content-list-7b479e4c-ad2c-43ae-9a18-f211d5361d1d\" class=\"hds-content-lists margin-y-3 padding-x-0 bg-spacesuit-white width-full maxw-full\" 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data-current-query=\"{\"block_id\":\"content-list-7b479e4c-ad2c-43ae-9a18-f211d5361d1d\",\"categories\":\"\",\"content_categories\":\"\",\"exclude_child_terms\":false,\"exclude_child_pages\":false,\"layout\":\"grid\",\"listing_page\":\"no\",\"listing_page_category_id\":2151,\"meta_fields\":[],\"news_tags\":\"\",\"number_of_items\":3,\"order\":\"DESC\",\"orderby\":\"date\",\"current_page\":1,\"requesting_id\":1219990,\"science_only\":false,\"search_query\":\"\",\"show_content_type_tags\":\"yes\",\"show_excerpts\":\"yes\",\"show_pagination\":true,\"show_publish_date\":\"no\",\"show_readtime\":\"yes\",\"show_thumbnails\":\"yes\",\"calendar_overflow_mode\":\"modal\",\"science_org\":\"\",\"content_science_orgs\":\"\",\"internal_terms\":\"\",\"mission_programs\":\"\",\"mission_status\":\"\",\"mission_target\":\"\",\"mission_type\":\"\",\"response_format\":\"html\",\"show_drafts\":false,\"related_content\":\"1277835,1272511,1281236,1280207,1281157,1351363,1226006,1259433,1256907,1228870\",\"use_content_term_filters\":false,\"filter_logic\":\"default\",\"post_types\":\"any\",\"base_terms\":\"{\"category\":\"\",\"science-org\":\"6478\",\"internal-terms\":\"\",\"news-tags\":\"\"}\"}\">\n<div class=\"grid-container grid-container-widescreen padding-x-3\">\n<div class=\"grid-row flex-align-start margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<h2 class=\"section-heading-sm line-height-sm\">You may also be interested in:<\/h2>\n<p class=\"margin-top-0 margin-bottom-2 maxh-tablet\">Stay up-to-date with the latest content from NASA as we explore the universe and discover more about our home planet.<\/p>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-container grid-container-block padding-0 margin-0 flex-justify-center\">\n<div class=\" grid-col-12\">\n<div class=\"grid-row grid-container grid-container-block padding-0\" style=\"display: block\">\n<div id=\"filter-tags\" class=\"grid-col-12 filter-tags-container\"><\/div>\n<\/p>\n<\/div>\n<div class=\"smd-orbit-loader\" role=\"status\" aria-hidden=\"true\">\n<div class=\"orbit-plane\"><span class=\"orbit-dot\"><\/span><\/div>\n<\/div>\n<div id=\"post-list-container\" class=\"hds-content-items hds-content-items-grid margin-top-2\" aria-live=\"polite\" data-rest-url=\"https:\/\/science.nasa.gov\/wp-json\/smd\/v1\/content-list\">\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/an-uncommon-drifter-in-the-denmark-strait\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  content-list-thumbnail\"><img decoding=\"async\" loading=\"lazy\" width=\"300px\" height=\"300px\" data-no-id=\"true\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/an-uncommon-drifter-in-the-denmark-strait\/greenlandbergzm_oli2_20260612_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;w=300 300w\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/an-uncommon-drifter-in-the-denmark-strait\/greenlandbergzm_oli2_20260612_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;%23038;w=300\" ><\/figure>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-inner\">\n            <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/an-uncommon-drifter-in-the-denmark-strait\/\" class=\"hds-content-item-heading\" rel=\"noopener\"><\/p>\n<div class=\"hds-a11y-heading-22\">An Uncommon Drifter in the Denmark Strait<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    4 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">A large iceberg, observed in summer 2026, had drifted more than 1,000 kilometers south from the northeastern Greenland bay where\u2026<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/a-bare-summer-for-barnes-ice-cap\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  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class=\"hds-a11y-heading-22\">A Bare Summer for Barnes Ice Cap<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    4 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">The expanse of glacial ice on Canada\u2019s Baffin Island lost its snow cover quickly and early in summer 2026, revealing\u2026<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<div class=\"hds-content-item content-list-item-post\">\n                    <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/pasterze-hangs-on-as-austrias-largest-glacier\/\" class=\"hds-content-item-thumbnail\" rel=\"noopener\"><\/p>\n<figure class=\"hds-media-background  content-list-thumbnail\"><img decoding=\"async\" loading=\"lazy\" width=\"300px\" height=\"300px\" data-no-id=\"true\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/pasterze-hangs-on-as-austria\u2019s-largest-glacier\/pasterzeglacier_oli2_20260815_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;w=300 300w\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/2026\/pasterze-hangs-on-as-austria%E2%80%99s-largest-glacier\/pasterzeglacier_oli2_20260815_th.jpg?fit=clip&#038;crop=faces%2Cfocalpoint&#038;%23038;w=300\" ><\/figure>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-inner\">\n            <a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/pasterze-hangs-on-as-austrias-largest-glacier\/\" class=\"hds-content-item-heading\" rel=\"noopener\"><\/p>\n<div class=\"hds-a11y-heading-22\">Pasterze Hangs on as Austria\u2019s Largest Glacier<\/div>\n<p>            <\/a><\/p>\n<div class=\"hds-content-item-readtime label margin-bottom-1\">\n                    4 min read                <\/div>\n<p class=\"margin-top-0 margin-bottom-1\">One narrowing icefall remains the linchpin for the Alpine glacier\u2014and it may not be long for this world.<\/p>\n<div class=\"display-flex flex-align-center label color-carbon-60 margin-bottom-auto\"><svg version=\"1.1\" class=\"square-2 margin-right-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"16px\" height=\"16px\" viewBox=\"0 0 16 16\" style=\"enable-background:new 0 0 16 16;\" xml:space=\"preserve\"><g><g><path d=\"M8,0C3.5,0-0.1,3.7,0,8.2C0.1,12.5,3.6,16,8,16c4.4,0,8-3.6,8-8C16,3.5,12.4,0,8,0z M8,15.2 C4,15.2,0.8,12,0.8,8C0.8,4,4,0.8,8,0.8c3.9,0,7.2,3.2,7.2,7.1C15.2,11.9,12,15.2,8,15.2z\"\/><path d=\"M5.6,12c0.8-0.8,1.6-1.6,2.4-2.4c0.8,0.8,1.6,1.6,2.4,2.4c0-2.7,0-5.3,0-8C8.8,4,7.2,4,5.6,4 C5.6,6.7,5.6,9.3,5.6,12z\"\/><\/g><\/g><\/svg><span>Article<\/span><\/div>\n<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"pagination-container\" class=\"pagination\">\n<nav class=\"hds-pagination hds-pagination--content-lists\" role=\"navigation\" aria-label=\"Pagination Navigation\" data-mid-size=\"2\" data-end-size=\"1\" data-max-pages=\"4\" >\n<span aria-current=\"page\" class=\"page-numbers current\" aria-label=\"Current Page, Page 1\" aria-current=\"true\" data-page-number=\"1\"><br \/>\n<span>1<\/span><\/span><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/uncovering-the-valleys-hidden-below-greenlands-ice\/#\" aria-label=\"Goto Page 2\" data-page-number=\"2\"><br \/>\n<span>2<\/span><\/a><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/uncovering-the-valleys-hidden-below-greenlands-ice\/#\" aria-label=\"Goto Page 3\" data-page-number=\"3\"><br \/>\n<span>3<\/span><\/a><br \/>\n<a class=\"page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/uncovering-the-valleys-hidden-below-greenlands-ice\/#\" aria-label=\"Goto Page 4\" data-page-number=\"4\"><br \/>\n<span>4<\/span><\/a><br \/>\n<a class=\"next page-numbers\" href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/uncovering-the-valleys-hidden-below-greenlands-ice\/#\" 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class=\"hds-media-background  \"><img decoding=\"async\" width=\"585\" height=\"425\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=585&#038;h=425&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=585&#038;h=425&#038;fit=crop&#038;crop=faces%2Cfocalpoint 585w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=300&#038;h=218&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/about\/NASA-EO-Logo-mediumBlue2016-stacked-mark.png?w=400&#038;h=291&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w\" sizes=\"auto, (max-width: 585px) 100vw, 585px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/earth-observatory\/image-of-the-day\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Earth Observatory Image of the Day<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">NASA&#8217;s Earth Observatory brings you the Earth, every day, with in-depth stories and stunning imagery.<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"2500\" height=\"1407\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2500&#038;h=1407&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2500&#038;h=1407&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2500w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=300&#038;h=169&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=768&#038;h=432&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1024&#038;h=576&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1536&#038;h=864&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2048&#038;h=1153&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=400&#038;h=225&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=600&#038;h=338&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=900&#038;h=507&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=1200&#038;h=675&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/esd\/eo\/images\/iotd\/iotd-banner.jpg?w=2000&#038;h=1126&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 2500px) 100vw, 2500px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/explore\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Explore Earth Science<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"1920\" height=\"1920\" src=\"https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1920&#038;h=1920&#038;%23038;fit=clip&#038;%23038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1920&#038;h=1920&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1920w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=150&#038;h=150&#038;fit=crop&#038;crop=faces%2Cfocalpoint 150w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=300&#038;h=300&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=768&#038;h=768&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1024&#038;h=1024&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1536&#038;h=1536&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=50&#038;h=50&#038;fit=crop&#038;crop=faces%2Cfocalpoint 50w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=100&#038;h=100&#038;fit=crop&#038;crop=faces%2Cfocalpoint 100w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=200&#038;h=200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 200w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=400&#038;h=400&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=600&#038;h=600&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=900&#038;h=900&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/images-assets.nasa.gov\/image\/NHQ202212160009\/NHQ202212160009~large.jpg?w=1200&#038;h=1200&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/earth\/data\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Earth Science Data<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewBox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Open access to NASA\u2019s archive of Earth science data<\/p>\n<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img decoding=\"async\" width=\"1536\" height=\"768\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?w=1536\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png 3600w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=300,150 300w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=768,384 768w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1024,512 1024w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1536,768 1536w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=2048,1024 2048w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=400,200 400w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=600,300 600w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=900,450 900w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=1200,600 1200w, https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/10\/biosphere-sea-2008-lrg.png?resize=2000,1000 2000w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><\/figure>\n<\/p>\n<\/div>\n<p>\t\t\t<\/a>\n\t\t\t\t<\/div>\n<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A new map of the terrain beneath the Greenland Ice Sheet links hundreds of valleys that previous maps missed or left fragmented.<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[16994,19007,15614,17377,18178,19152],"tags":[],"class_list":["post-554782","post","type-post","status-publish","format-standard","hentry","category-earth-observatory","category-earth-visualization-mapping","category-goddard-space-flight-center","category-ice-glaciers","category-icesat-2-ice-cloud-and-land-elevation-satellite-2","category-topography"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"A new map of the terrain beneath the Greenland Ice Sheet links hundreds of valleys that previous maps missed or left 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