{"id":4913,"date":"2022-08-25T10:56:40","date_gmt":"2022-08-25T09:56:40","guid":{"rendered":"https:\/\/lekiosque-med.dz\/?p=4913"},"modified":"2022-08-25T10:56:40","modified_gmt":"2022-08-25T09:56:40","slug":"espace-la-nasa-revele-un-son-mysterieux-emis-par-un-trou-noir-audio","status":"publish","type":"post","link":"https:\/\/lekiosquesport.dz\/?p=4913","title":{"rendered":"Espace\u00a0: la Nasa r\u00e9v\u00e8le un son myst\u00e9rieux \u00e9mis par un trou noir (audio)"},"content":{"rendered":"<p><strong>Capt\u00e9 en 2003 mais r\u00e9cemment rendu accessible \u00e0 l\u2019oreille humaine, le son myst\u00e9rieux \u00e9mis par un trou noir situ\u00e9 \u00e0 250 millions d\u2019ann\u00e9es-lumi\u00e8re a \u00e9t\u00e9 rendu public dimanche dernier par la Nasa sur Twitter.<\/strong><\/p>\n<p>L&rsquo;intrigant son provient de l&rsquo;environnement imm\u00e9diat d&rsquo;un trou noir situ\u00e9 en plein c\u0153ur de la galaxie Pers\u00e9e ou Perseus selon l&rsquo;orthographe anglo-saxonne, soit \u00e0 250 millions d&rsquo;ann\u00e9es-lumi\u00e8re de notre terre,\u00a0comme le rel\u00e8ve le site Motherboard.<\/p>\n<p>Le partage permet \u00e0 la Nasa de briser une id\u00e9e re\u00e7ue selon laquelle l&rsquo;espace baignerait dans un silence total.<\/p>\n<p>L\u2019enregistrement du son a eu lieu il y a d\u00e9j\u00e0 un moment. Plus pr\u00e9cis\u00e9ment, l&rsquo;Observatoire Chandra X-ray de la Nasa l&rsquo;a grav\u00e9 d\u00e8s 2003. Probl\u00e8me: il n&rsquo;\u00e9tait jusqu&rsquo;ici pas audible au commun des mortels. \u00ab\u00a0Dans cette nouvelle sonorisation de Pers\u00e9e, les ondes sonores que les astronomes avaient identifi\u00e9es pr\u00e9c\u00e9demment sont rendues audibles pour la premi\u00e8re fois\u00a0\u00bb, souligne l&rsquo;agence.<\/p>\n<p>Dans le d\u00e9tail, la Nasa a proc\u00e9d\u00e9 \u00e0 un travail d&rsquo;amplification de ses fr\u00e9quences, les haussant plusieurs \u00ab\u00a0quadrillions de fois\u00a0\u00bb, c&rsquo;est-\u00e0-dire des millions de milliards de fois. Une augmentation de leur port\u00e9e et du volume qui nous permet aujourd&rsquo;hui d&rsquo;entendre enfin ce chant de l&rsquo;univers.<\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">The misconception that there is no sound in space originates because most space is a ~vacuum, providing no way for sound waves to travel. A galaxy cluster has so much gas that we&rsquo;ve picked up actual sound. Here it&rsquo;s amplified, and mixed with other data, to hear a black hole! <a href=\"https:\/\/t.co\/RobcZs7F9e\">pic.twitter.com\/RobcZs7F9e<\/a><\/p>\n<p>\u2014 NASA Exoplanets (@NASAExoplanets) <a href=\"https:\/\/twitter.com\/NASAExoplanets\/status\/1561442514078314496?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noopener\">August 21, 2022<\/a><\/p><\/blockquote>\n<p><a href=\"http:\/\/blockquote%20class=twitter-tweetp%20lang=en%20dir=ltrThe%20misconception%20that%20there%20is%20no%20sound%20in%20space%20originates%20because%20most%20space%20is%20a%20~vacuum,%20providing%20no%20way%20for%20sound%20waves%20to%20travel.%20A%20galaxy%20cluster%20has%20so%20much%20gas%20that%20we&#039;ve%20picked%20up%20actual%20sound.%20Here%20it&#039;s%20amplified,%20and%20mixed%20with%20other%20data,%20to%20hear%20a%20black%20hole!%20a%20href=https:\/\/t.co\/RobcZs7F9epic.twitter.com\/RobcZs7F9e\/a\/p\u2014%20NASA%20Exoplanets%20(@NASAExoplanets)%20a%20href=https:\/\/twitter.com\/NASAExoplanets\/status\/1561442514078314496?ref_src=twsrc%5EtfwAugust%2021,%202022\/a\/blockquote%20script%20async%20src=https:\/\/platform.twitter.com\/widgets.js%20charset=utf-8\/script\"><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/a><\/p>\n<p><strong>L.K.M.\/Agences<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Capt\u00e9 en 2003 mais r\u00e9cemment rendu accessible \u00e0 l\u2019oreille humaine, le son myst\u00e9rieux \u00e9mis par un trou noir situ\u00e9 \u00e0 250 millions d\u2019ann\u00e9es-lumi\u00e8re a \u00e9t\u00e9 rendu public dimanche dernier par&hellip; <\/p>\n","protected":false},"author":1,"featured_media":4914,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6,4],"tags":[1791,205,1307,2336,2335],"class_list":["post-4913","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-afrique","tag-espace","tag-etats-unis","tag-nasa","tag-son","tag-trou-noir"],"jetpack_featured_media_url":"https:\/\/lekiosquesport.dz\/wp-content\/uploads\/2022\/08\/espace-trou-noir.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/posts\/4913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4913"}],"version-history":[{"count":1,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/posts\/4913\/revisions"}],"predecessor-version":[{"id":4915,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/posts\/4913\/revisions\/4915"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=\/wp\/v2\/media\/4914"}],"wp:attachment":[{"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lekiosquesport.dz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}