{"id":4064,"date":"2022-09-27T09:00:51","date_gmt":"2022-09-27T13:00:51","guid":{"rendered":"https:\/\/orbitalhub.com\/?p=4064"},"modified":"2022-09-24T20:18:58","modified_gmt":"2022-09-25T00:18:58","slug":"nasas-insight-lander-detects-meteoroid-strikes","status":"publish","type":"post","link":"https:\/\/orbitalhub.com\/?p=4064","title":{"rendered":"NASA\u2019s InSight Lander Detects Meteoroid Strikes"},"content":{"rendered":"<div style=\"float: left; padding-right: 30px;\">\n<p class=\"MsoNormal\" style=\"margin: 5px;\">&nbsp;<\/p>\n<p class=\"MsoNormal\" style=\"margin: 5px;\">\n<iframe loading=\"lazy\" width=\"580\" height=\"326\" src=\"https:\/\/www.youtube.com\/embed\/SA90WKuukmM\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/p>\n<p class=\"MsoNormal\" style=\"margin: 5px;\">&nbsp;<\/p>\n<p>NASA Jet Propulsion Laboratory dicit:<\/p>\n<p>NASA\u2019s InSight lander detected seismic waves from a meteoroid and was able to capture the sound of the space rock striking the surface of Mars for the first time. The meteoroid \u2013 the term used for incoming space rocks before they hit the ground \u2013 entered Mars\u2019 atmosphere on Sept. 5, 2021, exploding into at least three shards that each left craters behind. Mars\u2019 atmosphere is just 1% as dense as Earth\u2019s, allowing far more meteoroids to pass through and impact the Red Planet\u2019s surface. <\/p>\n<p>This event marks the first time seismic and acoustic waves from an impact were detected on the Red Planet. Why does this meteoroid impact sound like a \u201cbloop\u201d in the video? It has to do with a peculiar atmospheric effect that\u2019s also observed in deserts on Earth. <\/p>\n<p>After sunset, the atmosphere retains some heat accumulated during the day. Sound waves travel through this heated atmosphere at different speeds, depending on their frequency. As a result, lower-pitched sounds arrive before high-pitched sounds. An observer close to the impact would hear a \u201cbang,\u201d while someone many miles away would hear the bass sounds first, creating a \u201cbloop.\u201d <\/p>\n<p>NASA\u2019s Mars Reconnaissance Orbiter flew over the estimated impact site to confirm the location. The orbiter used its black-and-white Context Camera to reveal three darkened spots on the surface. <\/p>\n<p>After locating these spots, the orbiter\u2019s team used the High-Resolution Imaging Science Experiment camera, or HiRISE, to get a color close-up of the craters. Because HiRISE sees wavelengths the human eye can\u2019t detect, scientists change the camera\u2019s filters to enhance the color of the image. The areas that appear blue around the craters are where dust has been removed or disturbed by the blast of the impact. Martian dust is bright and red, so removing it makes the surface appear relatively dark and blue. <\/p>\n<p>Credit: NASA\/JPL-Caltech\/University of Maryland\/University of Arizona\/CNES\/IPGP\/Manchu\/Bureau 21\/ETH Zurich\/Kirschner\/van Driel <\/p>\n<p class=\"MsoNormal\" style=\"margin: 5px;\">&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>NASA\u2019s InSight lander detected seismic waves from a meteoroid and was able to capture the sound of the space rock striking the surface of Mars for the first time.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[113,1,463],"tags":[697],"class_list":["post-4064","post","type-post","status-publish","format-standard","hentry","category-mars-explorers","category-space-exploration","category-videos","tag-insight"],"_links":{"self":[{"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/posts\/4064","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4064"}],"version-history":[{"count":1,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/posts\/4064\/revisions"}],"predecessor-version":[{"id":4065,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=\/wp\/v2\/posts\/4064\/revisions\/4065"}],"wp:attachment":[{"href":"https:\/\/orbitalhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4064"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4064"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/orbitalhub.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4064"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}