{"id":8002,"date":"2017-06-20T15:14:09","date_gmt":"2017-06-20T15:14:09","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=8002"},"modified":"2018-06-21T05:16:40","modified_gmt":"2018-06-21T05:16:40","slug":"21-juin-cest-solstice-dete-lhemisphere-nord","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/06\/20\/21-juin-cest-solstice-dete-lhemisphere-nord\/","title":{"rendered":"Le 21 juin c’est le solstice d’\u00e9t\u00e9 dans l’h\u00e9misph\u00e8re nord"},"content":{"rendered":"

Le 21 juin marque le d\u00e9but de l’\u00e9t\u00e9 dans l\u2019h\u00e9misph\u00e8re nord pour notre plus grand plaisir. L’occasion de revenir sur ce qu’est le solstice.\u00a0<\/strong><\/p>\n

Le solstice de juin<\/a> marque le moment o\u00f9 le Soleil <\/a>atteint sa position la plus au nord sur la sph\u00e8re c\u00e9leste, une sph\u00e8re imaginaire sur laquelle on repr\u00e9sente tous les astres vus depuis la Terre. C’est le cas le 21 juin, date du d\u00e9but de l\u2019\u00e9t\u00e9 dans l\u2019h\u00e9misph\u00e8re nord et de l\u2019hiver dans l\u2019h\u00e9misph\u00e8re sud.<\/p>\n

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

Pour saluer l’arriv\u00e9e de l’\u00e9t\u00e9 il y a un peu plus de 4.000 ans, des hommes avaient d\u00e9j\u00e0 dress\u00e9 d\u2019immenses structures circulaires \u00e0 l\u2019aide de pierres dans le\u00a0comt\u00e9 du Wiltshire, dans le sud-ouest de l\u2019Angleterre.<\/p>\n

<\/span>Lorsque \u00e0 cette \u00e9poque on se pla\u00e7ait \u00e0 l\u2019int\u00e9rieur\u00a0du monument de Stonehenge le jour du solstice d\u2019\u00e9t\u00e9, on voyait se lever le Soleil <\/a>en direction du nord-est juste au-dessus d\u2019une pierre dress\u00e9e \u00e0 l\u2019ext\u00e9rieur du cercle.\u00a0Ce n\u2019est plus le cas actuellement en raison de la pr\u00e9cession orbitale de l\u2019axe de la Terre, mais les adorateurs du Soleil<\/a> seront sans doute encore tr\u00e8s nombreux cette ann\u00e9e pour assister au lever de notre \u00e9toile\u00a0\u00e0 Stonehenge \u00e0 l\u2019aube du 21 juin.<\/p>\n

Cette ann\u00e9e le solstice d\u2019\u00e9t\u00e9 a lieu le 21 juin. En r\u00e8gle g\u00e9n\u00e9ral le solstice d\u2019\u00e9t\u00e9 intervient \u00e0 cette date et plus rarement le 20 juin (ce fut le cas en 2008, 2012 et 2016), avec quelques anomalies : il se produira un 22 juin en l\u2019an 2203 (la derni\u00e8re fois c’\u00e9tait en 1975) et un 19 juin en 2488.<\/p>\n

L\u2019image ci-dessus, r\u00e9alis\u00e9e le 9 mai 2015, montre le lever du Soleil avec \u00e0 sa surface le groupe de taches AR 2339<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le 21 juin marque le d\u00e9but de l’\u00e9t\u00e9 dans l\u2019h\u00e9misph\u00e8re nord pour notre plus grand plaisir. L’occasion de revenir sur ce qu’est le solstice.\u00a0 Le solstice de juin marque le moment o\u00f9 le Soleil atteint sa position la plus au nord sur la sph\u00e8re c\u00e9leste, une sph\u00e8re imaginaire sur laquelle on repr\u00e9sente tous les astres … Continuer la lecture de Le 21 juin c’est le solstice d’\u00e9t\u00e9 dans l’h\u00e9misph\u00e8re nord<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":2762,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[1119,97,216,1706,1117,261],"class_list":["post-8002","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-angleterre","tag-soleil","tag-solstice","tag-solstice-dete","tag-stonehenge","tag-tache-solaire"],"yoast_head":"\nLe 21 juin c'est le solstice d'\u00e9t\u00e9 dans l'h\u00e9misph\u00e8re nord<\/title>\n<meta name=\"description\" content=\"Le 21 juin marque le d\u00e9but de l'\u00e9t\u00e9 dans l\u2019h\u00e9misph\u00e8re nord pour notre plus grand plaisir. 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