{"id":4065,"date":"2022-04-20T10:00:00","date_gmt":"2022-04-20T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=4065"},"modified":"2022-04-06T04:14:35","modified_gmt":"2022-04-06T04:14:35","slug":"weve-heard-mars-for-the-first-time-thanks-to-the-perseverance-rover","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/weve-heard-mars-for-the-first-time-thanks-to-the-perseverance-rover\/","title":{"rendered":"We\u2019ve Heard Mars For the First Time Thanks to the Perseverance Rover"},"content":{"rendered":"\n<p>It\u2019s taken at least a year of work, but French scientists have now managed to release their results from a study that started mere hours after <a href=\"https:\/\/modernsciences.org\/staging\/4414\/nasas-perseverance-finds-evidence-of-martian-ancient-flooding\/\" target=\"_blank\" rel=\"noreferrer noopener\">the famous Perseverance rover<\/a> landed on Mars; now, using sound recording from the rover\u2019s onboard SuperCam2 instrument, we can now hear the first-ever recorded sounds from <a href=\"https:\/\/modernsciences.org\/staging\/4414\/mars-arabia-terra-briefly-held-water-for-a-time-researchers-found\/\" target=\"_blank\" rel=\"noreferrer noopener\">the Red Planet<\/a>\u2014and it has some stories to tell.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.cnrs.fr\/en\/perseverance-records-first-ever-sounds-mars\" target=\"_blank\" rel=\"noreferrer noopener\">A press release from the<\/a> <a href=\"https:\/\/www.cnrs.fr\/en\" target=\"_blank\" rel=\"noreferrer noopener\">Centre National de la Recherche Scientifique (CNRS)<\/a> revealed their historical findings, which are now currently set for publication in the journal <a href=\"https:\/\/www.nature.com\/articles\/s41586-022-04679-0\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Nature<\/em><\/a>. The team was composed of several scientists working together to enable this feat, with experts from the <a href=\"https:\/\/www.univ-tlse3.fr\/\" target=\"_blank\" rel=\"noreferrer noopener\">University of Toulouse III &#8211; Paul Sabatier<\/a>, CNRS, and <a href=\"https:\/\/www.isae-supaero.fr\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">the Institut Sup\u00e9rieur de l&#8217;A\u00e9ronautique et de l&#8217;Espace (ISAE-SUPAERO)<\/a> leading the charge.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/lh5.googleusercontent.com\/3-cDD19yWKTG1zID0U_5ZGdc4Pz3iqNy6pS75b_nU9PL7R066uYoiVL6D22PT1ALbKmQHizARk111pK0woQChp5b2JJjBLBIykFuQDMHyhXW8KAirSUKirqIDnURuPsdDdH5eN3T\" ><figcaption>The SuperCam instrument aboard the Perseverance rover is located at the top of the rover and is responsible for some of the rover\u2019s imaging capabilities. (NASA\/JPL-Caltech, 2019)<\/figcaption><\/figure><\/div>\n\n\n\n<p>Some 18 hours after its descent and eventual landing on the surface of Mars, <a href=\"https:\/\/mars.nasa.gov\/mars2020\/\" target=\"_blank\" rel=\"noreferrer noopener\">the Perseverance rover<\/a> began recording sounds near its vicinity using the microphone aboard the rover\u2019s SuperCam 3, which was built under the supervision of the <a href=\"https:\/\/cnes.fr\/en\" target=\"_blank\" rel=\"noreferrer noopener\">Centre National d&#8217;Etudes Spatiales (CNES)<\/a>.<\/p>\n\n\n\n<p>The sounds picked up by the microphone were between the 20 Hz and 20 kHz range, which places the sounds well within the range of human hearing. However, the sounds reveal Mars to be an almost-entirely silent red landscape, with little movements on its surface to become sources of distinct sounds aside from the rover itself\u2014which in itself isn\u2019t too surprising given the planet\u2019s distinct lack of an atmosphere to carry sound waves far enough. In fact, Mars was so silent that the scientists inside Mission Control in the <a href=\"https:\/\/www.jpl.nasa.gov\/\" target=\"_blank\" rel=\"noreferrer noopener\">Jet Propulsion Laboratory (JPL)<\/a> thought the microphone was initially unresponsive.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"NASA\u2019s Perseverance Rover Captures Puff, Whir, Zap Sounds from Mars\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/lX5iVyfF3N0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>NASA revealed some of the historic sounds recorded by the rover through videos on the Jet Propulsion Laboratory YouTube channel. (NASA Jet Propulsion Laboratory, 2022)<\/figcaption><\/figure>\n\n\n\n<p>Here, the scientists found that the speed of sound on Mars is about 240 m\/s (787 ft\/s), which is some 100 m\/s slower than the same metric on Earth (340 m\/s; 1115.5 ft\/s). What\u2019s surprising, however, is that the Red Planet somehow has two speeds of sound: one for high-pitched sounds, and another for low frequencies. The quality of sound attenuation on its surface also meant that persons having a conversation on Mars, should they be able to talk without helmets and radio for some reason, would have a hard time understanding each other even if they were a mere 5 m (16 ft) apart.<\/p>\n\n\n\n<p>These facts may sound so distinct compared to our experience here on Earth, but things quickly fall in place once we consider the fact that Mars\u2019 atmosphere is comprised of roughly 96% carbon dioxide (CO<sub>2<\/sub>) with atmospheric pressures some 170 times less compared to Earth\u2019s. To compare, our own planet\u2019s CO<sub>2<\/sub> levels in our atmosphere are about just 0.04% on average.<\/p>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"NASA&#039;s Perseverance Rover Captures the Sounds of Mars\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/GHenFGnixzU?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><figcaption>NASA also gave its viewers a summary of the findings obtained by the Perseverance rover in an earlier video released prior to the publishing of the paper. (NASA Jet Propulsion Laboratory, 2021)<\/figcaption><\/figure>\n\n\n\n<p>Future studies plan to make use of these recordings, some five (5) hours in total, which will enable scientists to study how Mars\u2019 atmosphere interacts with its rocky surface. The results also bring promise to any future attempts to bring microphones to rovers and probes that may in the future explore worlds beyond Mars.<\/p>\n\n\n\n<h2 id=\"references\" class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><em>First Audio Recording of Sounds on Mars<\/em>. (2021, March 10). NASA Mars Exploration. <a href=\"https:\/\/mars.nasa.gov\/resources\/25713\/first-audio-recording-of-sounds-on-mars\" target=\"_blank\" rel=\"noopener\">https:\/\/mars.nasa.gov\/resources\/25713\/first-audio-recording-of-sounds-on-mars<\/a><\/li><li>Maurice, S., Chide, B., Murdoch, N., Lorenz, R. D., Mimoun, D., Wiens, R. C., Stott, A., Jacob, X., Bertrand, T., Montmessin, F., Lanza, N. L., Alvarez-Llamas, C., Angel, S. M., Aung, M., Balaram, J., Beyssac, O., Cousin, A., Delory, G., Forni, O., \u2026 Williford, K. (2022). In situ recording of Mars soundscape. <em>Nature<\/em>, 1\u20139. <a href=\"https:\/\/doi.org\/10.1038\/s41586-022-04679-0\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1038\/s41586-022-04679-0<\/a><\/li><li><em>Perseverance records the first ever sounds from Mars<\/em>. (2022, April 1). Centre National de La Recherche Scientifique. <a href=\"https:\/\/www.cnrs.fr\/en\/perseverance-records-first-ever-sounds-mars\" target=\"_blank\" rel=\"noopener\">https:\/\/www.cnrs.fr\/en\/perseverance-records-first-ever-sounds-mars<\/a><\/li><li>Szondy, D. (2022, April 3). <em>Sounds of Mars reveal secrets of the Red Planet\u2019s atmosphere<\/em>. New Atlas. <a href=\"https:\/\/newatlas.com\/space\/sound-of-mars-secrets-martian-atmosphere\/\" target=\"_blank\" rel=\"noopener\">https:\/\/newatlas.com\/space\/sound-of-mars-secrets-martian-atmosphere\/<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"It\u2019s taken at least a year of work, but French scientists have now managed to release their results&hellip;\n","protected":false},"author":2,"featured_media":4066,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[14],"tags":[46,45],"class_list":{"0":"post-4065","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-mars","9":"tag-perseverance","10":"cs-entry","11":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=4065"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4065\/revisions"}],"predecessor-version":[{"id":4067,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4065\/revisions\/4067"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/4066"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=4065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=4065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=4065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}