{"id":19256,"date":"2016-09-05T21:50:50","date_gmt":"2016-09-05T13:50:50","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/philae-found-at-last-rosetta-probe-spots-lost-lander-stuck-in-a-comets-crack\/"},"modified":"2016-09-05T21:50:50","modified_gmt":"2016-09-05T13:50:50","slug":"philae-found-at-last-rosetta-probe-spots-lost-lander-stuck-in-a-comets-crack","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/philae-found-at-last-rosetta-probe-spots-lost-lander-stuck-in-a-comets-crack\/","title":{"rendered":"Philae found at last! Rosetta probe spots lost lander stuck in a comet\u2019s crack"},"content":{"rendered":"<figure id=\"attachment_272306\" aria-describedby=\"caption-attachment-272306\" style=\"width: 619px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-272306\" src=\"https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander.jpg\" alt=\"Philae close-up\" width=\"619\" height=\"621\" srcset=\"https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander.jpg 619w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander-150x150.jpg 150w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander-300x300.jpg 300w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander-100x100.jpg 100w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-rosetta-lander-200x201.jpg 200w\" sizes=\"(max-width: 619px) 100vw, 619px\"><figcaption data-nosnippet=\"\" id=\"caption-attachment-272306\" class=\"wp-caption-text\">An extreme close-up of the Philae lander shows components of the 3-foot-wide spacecraft from a distance of 1.7 miles. (Credit: ESA \/ Rosetta \/ MPS for OSIRIS Team \/ UPD \/ LAM \/ IAA \/ SSO \/ INTA \/ UPM \/ DASP \/ IDA)<\/figcaption><\/figure>\n<p>After almost two years\u2019 of searching, the European Space Agency\u2019s Rosetta spacecraft has shown scientists what happened to the Philae lander when it bounced onto the surface of a comet&nbsp;\u2013 and why it went out of contact.<\/p>\n<p>The answer to the mystery comes less than a month before the $1.4 billion Rosetta mission\u2019s end.<\/p>\n<p>Rosetta\u2019s OSIRIS camera spotted the boxy, 3-foot-wide Philae lander stuck in a dark crack on Comet 67\/Churyumov-Gerasimenko, more than 420 million miles from Earth.<\/p>\n<p>The comet has been the object of Rosetta\u2019s study since August 2014.&nbsp;Philae was pushed out from the main spacecraft and descended to the surface that November. The lander was supposed to beam up a stream of data about the comet\u2019s composition. It did provide three&nbsp;days\u2019 worth of data, but then the solar-powered probe fell silent.<\/p>\n<p>Rosetta\u2019s scientists determined that the lander had bounced on the surface, and spent months analyzing radio data and imagery from the main spacecraft in an attempt to figure out where it ended up. They assumed that Philae had fallen someplace dark where it couldn\u2019t recharge its batteries.<\/p>\n<figure id=\"attachment_272312\" aria-describedby=\"caption-attachment-272312\" style=\"width: 630px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full-width wp-image-272312\" src=\"https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-closeup-sequence-630x416.jpg\" alt=\"A series of images shows the location of the Philae lander on Comet 67P\/Churyumov-Gerasimenko. The red dot on the image at upper right shows the area covered by the higher-resolution image at left, and the red box in that image shows the area covered by the extreme close-up at lower right. (Credit ESA \/ Rosetta \/ MPS for OSIRIS Team \/ UPD \/ LAM \/ IAA \/ SSO \/ INTA \/ UPM \/ DASP \/ IDA \/ NavCam)\" width=\"630\" height=\"416\" srcset=\"https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-closeup-sequence-630x416.jpg 630w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-closeup-sequence-768x507.jpg 768w, https:\/\/cdn.geekwire.com\/wp-content\/uploads\/2016\/09\/160905-philae-closeup-sequence-1240x819.jpg 1240w\" sizes=\"(max-width: 630px) 100vw, 630px\"><figcaption data-nosnippet=\"\" id=\"caption-attachment-272312\" class=\"wp-caption-text\">A series of images shows the location of the Philae lander on Comet 67P\/Churyumov-Gerasimenko. The red dot on the image at upper right shows the area covered by the higher-resolution image at left. The red box in that image shows the area covered by the close-up at lower right.&nbsp;Click on the image for a larger version. (Credit ESA \/ Rosetta \/ MPS for OSIRIS Team \/ UPD \/ LAM \/ IAA \/ SSO \/ INTA \/ UPM \/ DASP \/ IDA \/ NavCam)<\/figcaption><\/figure>\n<p>Long-range pictures weren\u2019t sharp enough to show Philae. The lander did send out some brief radio transmissions in June and July of last year, but not enough to let scientists nail down its location. Finally, on Sept. 2, Rosetta solved the mystery&nbsp;\u2013 and the explanation turned out to be just as scientists guessed.<\/p>\n<p>In a picture taken on Sept. 2 from a distance of 1.7 miles, the lander shows up clearly, wedged in a crevice in a region known as Abydos. The picture shows two of the spacecraft\u2019s three landing legs extended toward the rugged&nbsp;sides of the crevice.<\/p>\n<p>The key to the discovery was that Rosetta is circling closer to the comet in preparation for its final data-gathering descent on Sept. 30, which will end with its own crash onto the surface.<\/p>\n<p>\u201cWith only a month left of the Rosetta mission, we are so happy to have finally imaged Philae, and to see it in such amazing detail,\u201d OSIRIS team member Cecilia Tubiana said today in a news release. ESA says Tubiana was the first person to see the images when they were downlinked from Rosetta on Sunday.<\/p>\n<p>\u201cIt is incredible we have captured this at the final hour,\u201d said Patrick Martin, ESA\u2019s Rosetta mission manager.<\/p>\n<p><iframe title=\"Rosetta:  the end is in sight\" src=\"https:\/\/www.youtube.com\/embed\/UobzGZH2VnE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"\" data-ratio=\"0.5625\" data-width=\"800\" data-height=\"450\" style=\"display: block; margin: 0px; width: 800px; height: 450px;\"><\/iframe><\/p>\n<p>&nbsp;<br \/>\nMatt Taylor, ESA\u2019s Rosetta project scientist, said there\u2019s significant scientific value in figuring out precisely where Philae fell.<\/p>\n<p>\u201cThis wonderful news means that we now have the missing \u2018ground-truth\u2019 information needed to put Philae\u2019s three days of science into proper context, now that we know where that ground actually is!\u201d he said.<\/p>\n<p>Philae found that the ground where it landed was covered with coarse material&nbsp;such as pebbles and rocks rather than the dust deposits that scientists had expected. The lander tried to drill into the surface but soon encountered solid ice. Those observations make perfect sense, now that scientists are seeing the rugged crevice on Rosetta\u2019s imagery.<\/p>\n<p>Readings&nbsp;from Philae also told scientists that the comet contained lots of water ice and frozen carbon dioxide, along with a mix of 16 carbon-containing organic compounds. Under the right conditions, such chemicals could serve as the building blocks for life.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An extreme close-up of the Philae lander shows components of the 3-foot-wide spacecraft from a distance of 1.7 miles. (Credit: ESA \/ Rosetta \/ MPS for OSIRIS Team \/ UPD \/ LAM \/ IAA \/ SSO \/ INTA \/ UPM \/ DASP \/ IDA) After almost two years\u2019 of searching, the European Space Agency\u2019s Rosetta [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[2423,246,3609,3373],"class_list":["post-19256","post","type-post","status-publish","format-standard","hentry","category-news","tag-comets","tag-esa","tag-philae","tag-rosetta"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/19256"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=19256"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/19256\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=19256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=19256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=19256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}