{"id":348,"date":"2016-05-18T14:18:00","date_gmt":"2016-05-18T18:18:00","guid":{"rendered":"https:\/\/dev.www.purdue.edu\/research\/researchatpurdue\/wp-content\/uploads\/2016\/05\/melosh-mascons.jpg"},"modified":"2016-05-18T14:42:48","modified_gmt":"2016-05-18T18:42:48","slug":"melosh-mascons","status":"inherit","type":"attachment","link":"https:\/\/www.purdue.edu\/research\/features\/stories\/347-2\/melosh-mascons\/","title":{"rendered":"melosh-mascons"},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_links_to":"","_links_to_target":""},"class_list":["post-348","attachment","type-attachment","status-inherit","hentry"],"acf":[],"description":{"rendered":""},"caption":{"rendered":"<p>Prof. Jay Melosh led a study of large concentrations of mass on the lunar surface. The team confirmed that the mass concentrations, or &#8220;mascons,&#8221; were caused by massive asteroid impacts billions of year ago and determined how these impacts changed the density of material on the moon&#8217;s surface and, in turn, its gravity field. (Purdue University photo\/Mark Simons; image of lunar gravity field courtesy of NASA)<\/p>\n"},"alt_text":"","media_type":"image","mime_type":"image\/jpeg","media_details":{"width":600,"height":560,"file":"2016\/05\/melosh-mascons.jpg","sizes":{"thumbnail":{"file":"melosh-mascons-150x150.jpg","width":150,"height":150,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-150x150.jpg"},"medium":{"file":"melosh-mascons-300x280.jpg","width":300,"height":280,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-300x280.jpg"},"slider-thumb":{"file":"melosh-mascons-600x395.jpg","width":600,"height":395,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-600x395.jpg"},"teaser-thumb":{"file":"melosh-mascons-332x310.jpg","width":332,"height":310,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-332x310.jpg"},"gallery-1-thumb":{"file":"melosh-mascons-432x432.jpg","width":432,"height":432,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-432x432.jpg"},"gallery-2-thumb":{"file":"melosh-mascons-268x268.jpg","width":268,"height":268,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-268x268.jpg"},"gallery-3-thumb":{"file":"melosh-mascons-268x164.jpg","width":268,"height":164,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-268x164.jpg"},"video-thumb":{"file":"melosh-mascons-600x393.jpg","width":600,"height":393,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons-600x393.jpg"},"full":{"file":"melosh-mascons.jpg","width":600,"height":560,"mime_type":"image\/jpeg","source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons.jpg"}},"image_meta":{"aperture":"4.5","credit":"","camera":"NIKON D4","caption":"Jay Melosh, a Purdue distinguished professor of earth, atmospheric and planetary sciences, stands in front of a map showing the moon's gravity field. As a member of the science team of NASA's Gravity Recovery and Interior Laboratory, or GRAIL, mission, Melosh led a study of large concentrations of mass on the lunar surface. The team confirmed that the mass concentrations, or \"mascons,\" were caused by massive asteroid impacts billions of year ago and determined how these impacts changed the density of material on the moon's surface and, in turn, its gravity field. (Purdue University photo\/Mark Simons; image of lunar gravity field courtesy of NASA)","created_timestamp":"1369008000","copyright":"","focal_length":"52","iso":"800","shutter_speed":"0.02","title":"","orientation":"1","keywords":[]}},"post":347,"source_url":"https:\/\/www.purdue.edu\/research\/features\/wp-content\/uploads\/2016\/05\/melosh-mascons.jpg","filename":"melosh-mascons.jpg","filesize":121072,"_links":{"self":[{"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/media\/348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/media"}],"about":[{"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/types\/attachment"}],"author":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/comments?post=348"}],"wp:attached-to":[{"embeddable":true,"post_type":"post","id":347,"href":"https:\/\/www.purdue.edu\/research\/features\/wp-json\/wp\/v2\/posts\/347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}