{"id":508,"date":"2020-07-01T10:49:11","date_gmt":"2020-07-01T10:49:11","guid":{"rendered":"https:\/\/staffblogs.le.ac.uk\/mars\/?p=508"},"modified":"2025-02-26T13:28:35","modified_gmt":"2025-02-26T13:28:35","slug":"climbing-mount-sharp-from-warm-and-wet-to-cold-and-dry","status":"publish","type":"post","link":"https:\/\/staffblogs.le.ac.uk\/mars\/2020\/07\/01\/climbing-mount-sharp-from-warm-and-wet-to-cold-and-dry\/","title":{"rendered":"Climbing Mount Sharp: From Warm and Wet to Cold and Dry."},"content":{"rendered":"<div id=\"attachment_510\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-510\" class=\"size-medium wp-image-510\" src=\"https:\/\/staffblogs.le.ac.uk\/mars\/files\/2020\/07\/Mount-Sharp-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/staffblogs.le.ac.uk\/mars\/files\/2020\/07\/Mount-Sharp-300x300.jpg 300w, https:\/\/staffblogs.le.ac.uk\/mars\/files\/2020\/07\/Mount-Sharp-150x150.jpg 150w, https:\/\/staffblogs.le.ac.uk\/mars\/files\/2020\/07\/Mount-Sharp.jpg 557w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-510\" class=\"wp-caption-text\">Climbing Mt. Sharp from ancient lake deposits at the the base, to more desiccated, sulphate-rich deposits higher up the mountain.<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>Mars Science Laboratory is entering a new extended mission phase and about to start addressing a key part of the MSL original scientific aims.\u00a0 Gale Crater was chosen as a landing site for the Curiosity Rover because it has preserved a unique record of the transition from \u2018Warm and Wet\u2019 in Ancient Mars about 4 Gy ago to today\u2019s cold and dry conditions. We have found evidence for the ancient climate in the form of muds laid down in a lake that once filled the crater and clays, iron oxides that formed as the lake deposits were buried and heated.\u00a0 Similar conditions were probably present over much of the ancient highlands of Mars.<\/p>\n<p>However, around 3.8 Gyr a major change took place on Mars.\u00a0 For reasons that are not yet fully understood the thick CO<sub>2<\/sub> atmosphere that allowed stable bodies of water to exist on the surface was lost, and today there is only 6.5 mbar of CO<sub>2<\/sub> atmospheric pressure.\u00a0 As we drive up Mt. Sharp \u2013 the central 5.5 km high mountain in Gale Crater \u2013 the clay-rich terrains will start to change to sulphate-rich outcrops. This is predicted by Near InfraRed spectroscopy from orbit. We are about to enter a gorge on the side of Mt. Sharp called Geddes Vallis which Curiosity will drive up in the Extended Mission to find out how and why the climate made its dramatic change.\u00a0 Some of the questions we will address with our <a href=\"https:\/\/mars.nasa.gov\/msl\/spacecraft\/instruments\/summary\/\">instruments and drill<\/a> are how long did the climate change take place over \u2013 a short dramatic event or over a more protracted era for hundreds of millions of years? Did the Gale Lake dry up entirely straight away or were there diminishing episodes of lake and river activity?<\/p>\n<p>As the year progresses I will write blog pieces about the progress of the Curiosity Rover into and up Geddes Vallis, the launch of Mars2020, progress in the ExoMars rover\u2019s development and about the largest Mars science project of all \u2013 Mars Sample Return. The Physics and Astronomy web pages will also have a podcast about how we drive a rover on Mars based on my 8 years of rover operations experience.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Mars Science Laboratory is entering a new extended mission phase and about to start addressing a key part of the MSL original scientific aims.\u00a0 Gale Crater was chosen as a landing site for the Curiosity Rover because it has preserved a unique record of the transition from \u2018Warm and Wet\u2019 in Ancient Mars about [&hellip;]<\/p>\n","protected":false},"author":273,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-508","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/508","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/users\/273"}],"replies":[{"embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/comments?post=508"}],"version-history":[{"count":2,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/508\/revisions"}],"predecessor-version":[{"id":511,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/posts\/508\/revisions\/511"}],"wp:attachment":[{"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/media?parent=508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/categories?post=508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/staffblogs.le.ac.uk\/mars\/wp-json\/wp\/v2\/tags?post=508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}