{"id":6267,"date":"2016-08-28T05:33:42","date_gmt":"2016-08-28T05:33:42","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6267"},"modified":"2016-09-10T08:05:56","modified_gmt":"2016-09-10T08:05:56","slug":"rendez-venus-jupiter-a-tenu-promesses","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/08\/28\/rendez-venus-jupiter-a-tenu-promesses\/","title":{"rendered":"Le rendez-vous V\u00e9nus-Jupiter a tenu ses promesses"},"content":{"rendered":"

Le 27 ao\u00fbt en soir\u00e9e les plan\u00e8tes V\u00e9nus et Jupiter se fr\u00f4laient \u00e0 l’horizon, un spectacle d\u00e9licat qu’on pu suivre les observateurs bien pr\u00e9par\u00e9s.<\/strong><\/p>\n

C’est un rapprochement serr\u00e9 comme on n’en reverra pas avant 2065 : le samedi soir 27 ao\u00fbt une conjonction tr\u00e8s spectaculaire avait lieu entre V\u00e9nus <\/a>et Jupiter<\/a>, les deux plan\u00e8tes les plus brillantes du Syst\u00e8me solaire actuellement (V\u00e9nus avec une magnitude de -3,7 et Jupiter avec une magnitude de -1,7). Les deux astres se sont crois\u00e9s dans la constellation de la Vierge alors que Jupiter plonge en direction du Soleil <\/a>(la plan\u00e8te gazeuse g\u00e9ante sera en conjonction avec notre \u00e9toile le 26 septembre) tandis que V\u00e9nus escalade lentement l’\u00e9cliptique dans un mouvement inverse.<\/p>\n

\"jupiter_venus3\"<\/a><\/p>\n

Ce rapprochement \u00e9tait d\u00e9licat \u00e0 suivre car il se produisait au-dessus de l’horizon OUEST peu apr\u00e8s le coucher du Soleil<\/a>, alors que le ciel \u00e9tait encore tr\u00e8s lumineux (les conditions d’observation \u00e9taient beaucoup moins bonnes que lors de la pr\u00e9c\u00e9dente conjonction entre ces deux plan\u00e8tes le 30 juin 2015<\/a>). Seuls les observateurs aguerris ont pu admirer et photographier le ph\u00e9nom\u00e8ne apr\u00e8s avoir rep\u00e9r\u00e9 aux jumelles le couple plan\u00e9taire.<\/p>\n

\"jupiter_venus6\"<\/a><\/p>\n

Certains historiens ont \u00e9mis l’hypoth\u00e8se qu’une telle conjonction pourrait \u00eatre \u00e0 l’origine de\u00a0\u00ab l’ \u00e9toile de Bethl\u00e9em \u00bb ou \u00ab \u00e9toile de No\u00ebl \u00bb, le signe qui selon l’\u00c9vangile annon\u00e7a \u00e0 des mages orientaux la naissance de J\u00e9sus.\u00a0<\/p>\n

Il faut se rappeler que les Chald\u00e9ens qui occupaient la M\u00e9sopotamie il y a 2.000 ans \u00e9taient les observateurs assidus du ciel nocturne et que les mouvements des astres leur \u00e9taient familiers. Ces anciens astrologues connaissaient beaucoup mieux les \u00e9toiles et les constellations que la plupart de nos contemporains victimes de la pollution lumineuse<\/a>.<\/p>\n

\"jupiter_venus7\"<\/a><\/p>\n

L’utilisation de logiciels de plan\u00e9tarium a permis de remonter le temps et de reproduire le ciel observable il y a un peu plus de 2.000 ans. On a d\u00e9couvert que deux conjonctions tr\u00e8s serr\u00e9es se sont produites entre V\u00e9nus et Jupiter \u00e0 l’\u00e9poque, une au cours du mois d’ao\u00fbt de l’an -3 avant J.-C. et une autre onze mois plus tard.<\/p>\n

\"jupiter_venus5\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Le 27 ao\u00fbt en soir\u00e9e les plan\u00e8tes V\u00e9nus et Jupiter se fr\u00f4laient \u00e0 l’horizon, un spectacle d\u00e9licat qu’on pu suivre les observateurs bien pr\u00e9par\u00e9s. C’est un rapprochement serr\u00e9 comme on n’en reverra pas avant 2065 : le samedi soir 27 ao\u00fbt une conjonction tr\u00e8s spectaculaire avait lieu entre V\u00e9nus et Jupiter, les deux plan\u00e8tes les … Continuer la lecture de Le rendez-vous V\u00e9nus-Jupiter a tenu ses promesses<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":6268,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[193,113,1814,1815,90,451,159],"class_list":["post-6267","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-conjonction","tag-constellation-de-la-vierge","tag-etoile-de-bethleem","tag-etoile-de-noel","tag-jupiter","tag-paire-de-jumelles","tag-venus"],"yoast_head":"\nLe rendez-vous V\u00e9nus-Jupiter a tenu ses promesses<\/title>\n<meta name=\"description\" content=\"Le 27 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