{"id":3466,"date":"2015-08-27T05:11:33","date_gmt":"2015-08-27T05:11:33","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=3466"},"modified":"2018-08-27T16:23:43","modified_gmt":"2018-08-27T16:23:43","slug":"mars-aussi-grosse-que-la-lune-le-canular-du-27-aout","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/27\/mars-aussi-grosse-que-la-lune-le-canular-du-27-aout\/","title":{"rendered":"Mars aussi grosse que la Lune, le canular du 27 ao\u00fbt"},"content":{"rendered":"<p><strong>Chaque ann\u00e9e, une rumeur stupide circule sur la Toile : la plan\u00e8te Mars sera aussi grosse dans le ciel que la Lune le 27 ao\u00fbt, ce qui est impossible.<\/strong><\/p>\n<p><em>&#8220;Le 27 ao\u00fbt, \u00e0 minuit 30, regardez dans le ciel. La plan\u00e8te <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/23\/les-planetes-venus-et-mars-salignent-au-crepuscule\/\" target=\"_blank\" rel=\"noopener noreferrer\">Mars <\/a>sera la plus brillante. Elle sera aussi grosse que la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/18\/la-pleine-lune-influence-t-elle-la-vie-des-terriens\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pleine Lune<\/a>. Cela nous appara\u00eetra, \u00e0 l&#8217;\u0153il nu, comme si la Terre poss\u00e9dait 2 Lunes ! La prochaine fois que cet \u00e9v\u00e9nement se reproduira &#8230; ce sera en 2287 ! &#8230;&#8230;Partagez cette info avec vos amis car personne en vie aujourd&#8217;hui ne pourra voir cela une seconde fois&#8221;.\u00a0<\/em>Chaque ann\u00e9e c&#8217;est le m\u00eame message qui arrive par courriel ou circule sur les r\u00e9seaux sociaux. On appelle cela un hoax, qui d\u00e9signe en anglais une fausse information propag\u00e9e par les internautes.<\/p>\n<p><strong>En vid\u00e9o : le long p\u00e9riple d\u2019Opportunity \u00e0 la surface de Mars<\/strong><\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" frameborder=\"0\" width=\"480\" height=\"270\" src=\"\/\/www.dailymotion.com\/embed\/video\/x2x7kjm\" 0=\"allowfullscreen\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Tout a commenc\u00e9 en ao\u00fbt 2003, date \u00e0 laquelle la plan\u00e8te <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/06\/24\/mro-detecte-du-verre-a-la-surface-de-mars\/\" target=\"_blank\" rel=\"noopener noreferrer\">Mars <\/a>s&#8217;est approch\u00e9e \u00e0 55 millions de kilom\u00e8tres de la Terre.<!--more--><\/p>\n<p>M\u00eame si cette distance \u00e9tait la plus courte connue entre ces deux astres depuis plus de 60.000 ans, la Plan\u00e8te rouge avait alors un diam\u00e8tre apparent de seulement 25 secondes d&#8217;arc, 70 fois moins que le disque de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/10\/pleine-lune-le-2-juillet-derriere-le-temple-de-poseidon\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pleine Lune<\/a> ! Il est donc rigoureusement impossible d&#8217;admirer un jour la plan\u00e8te Mars aussi grosse que la Lune, mais les images envoy\u00e9es par les rovers martiens comme <a href=\"http:\/\/mars.nasa.gov\/mer\/home\/\" target=\"_blank\" rel=\"noopener noreferrer\">Opportunity<\/a> sont l\u00e0 pour nous consoler.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/mars.jpg\" rel=\"lightbox[3466]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-3471\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/mars-450x338.jpg\" alt=\"mars\" width=\"450\" height=\"338\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/mars-450x338.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/mars-1024x768.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/08\/mars.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>En 2018 l&#8217;opposition martienne s&#8217;est produite le 27 juillet (le m\u00eame jour qu&#8217;une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2018\/07\/30\/27-juillet-mars-sapproche-et-la-lune-seclipse\/\" target=\"_blank\" rel=\"noopener\">\u00e9clipse de Lune<\/a>, une simple co\u00efncidence) : Mars \u00e9tait alors \u00e0 57,6 millions de kilom\u00e8tres de nous et son diam\u00e8tre apparent atteignait 24,3 secondes d&#8217;arc, une aubaine pour admirer les paysages martiens&#8230; \u00e0 l&#8217;aide d&#8217;un bon\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/14\/en-images-les-telescopes-amateurs\/\" target=\"_blank\" rel=\"noopener\">t\u00e9lescope<\/a>, bien s\u00fbr !<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Chaque ann\u00e9e, une rumeur stupide circule sur la Toile : la plan\u00e8te Mars sera aussi grosse dans le ciel que la Lune le 27 ao\u00fbt, ce qui est impossible. &#8220;Le 27 ao\u00fbt, \u00e0 minuit 30, regardez dans le ciel. La plan\u00e8te Mars sera la plus brillante. Elle sera aussi grosse que la Pleine Lune. Cela &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/08\/27\/mars-aussi-grosse-que-la-lune-le-canular-du-27-aout\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Mars aussi grosse que la Lune, le canular du 27 ao\u00fbt<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":3471,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[487,1213,82,116,114,96],"class_list":["post-3466","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-canular","tag-hoax","tag-lune","tag-mars","tag-planete","tag-telescope"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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