{"id":10209,"date":"2019-04-26T05:11:47","date_gmt":"2019-04-26T05:11:47","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=10209"},"modified":"2019-05-07T17:07:01","modified_gmt":"2019-05-07T17:07:01","slug":"la-galaxie-du-triangle-messier-33-en-haute-resolution","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/26\/la-galaxie-du-triangle-messier-33-en-haute-resolution\/","title":{"rendered":"La galaxie du Triangle (Messier 33) en haute r\u00e9solution"},"content":{"rendered":"

Un assemblage de 54 clich\u00e9s haute r\u00e9solution pris par le t\u00e9lescope spatial Hubble r\u00e9v\u00e8le la richesse stellaire de Messier 33, la galaxie du Triangle.<\/strong><\/p>\n

54 images assembl\u00e9es :<\/h5>\n

25 millions : c’est le nombre d’\u00e9toiles que l’on pourrait compter (si l’on en cro\u00eet la NASA<\/a>) sur cette mosa\u00efque. Elle est constitu\u00e9e de 54 images r\u00e9alis\u00e9es par le t\u00e9lescope spatial Hubble<\/a>. Il s’agit d’un zoom incroyablement d\u00e9taill\u00e9 de la galaxie Messier 33. Elle est appel\u00e9e aussi galaxie du Triangle du nom de la modeste constellation qui l’h\u00e9berge. Le Triangle est d’ailleurs la seule constellation de toute la vo\u00fbte c\u00e9leste \u00e0 porter le nom d’une figure g\u00e9om\u00e9trique.<\/p>\n

\"\"<\/a>
Messier 33 photographi\u00e9e en haute r\u00e9solution par le t\u00e9lescope Hubble. \u00a9 NASA\/ESA<\/figcaption><\/figure>\n

Coinc\u00e9e entre Pers\u00e9e<\/a> et Androm\u00e8de<\/a>, la petite constellation du Triangle ne compte que 25 \u00e9toiles visibles \u00e0 l’\u0153il nu. La plus brillante n’est que de magnitude<\/a> 3 ; c’est dire comme elle est peu spectaculaire. Mais le seul objet Messier qu’elle h\u00e9berge, M 33, vaut largement le d\u00e9tour. <\/p>\n

Une tache floue tr\u00e8s \u00e9tendue :<\/h5>\n

\u00c0 moins de 3 millions d’ann\u00e9es-lumi\u00e8re, la galaxie du Triangle est une galaxie spirale que nous voyons de face. C’est une petite tache floue que les bons observateurs per\u00e7oivent \u00e0 l’\u0153il nu quand ils admirent le ciel nocturne loin de toute pollution lumineuse<\/a>. Cependant sa brillance est assez faible en raison de son \u00e9tendue apparente \u00e9quivalente \u00e0 quatre fois celle de la Pleine Lune<\/a>. Elle forme avec Messier 31<\/a> et la Voie lact\u00e9e<\/a> le trio galactique le plus imposant du Groupe local. Une soixantaine de galaxies dont nous faisons partie constituent ce groupe.<\/p>\n

\"\"<\/a>
La constellation du Triangle est id\u00e9alement plac\u00e9e en d\u00e9but de soir\u00e9e au mois de f\u00e9vrier pour y rechercher la galaxie Messier 33, loin de toute pollution lumineuse. \u00a9 Stelvision<\/figcaption><\/figure>\n

Je vous invite \u00e0 t\u00e9l\u00e9charger la\u00a0version haute r\u00e9solution<\/a> de votre choix pour d\u00e9couvrir la profusion d’\u00e9toiles au sein de cette galaxie ainsi que de nombreuses n\u00e9buleuses, v\u00e9ritables pouponni\u00e8res stellaires.<\/p>\n","protected":false},"excerpt":{"rendered":"

Un assemblage de 54 clich\u00e9s haute r\u00e9solution pris par le t\u00e9lescope spatial Hubble r\u00e9v\u00e8le la richesse stellaire de Messier 33, la galaxie du Triangle. 54 images assembl\u00e9es : 25 millions : c’est le nombre d’\u00e9toiles que l’on pourrait compter (si l’on en cro\u00eet la NASA) sur cette mosa\u00efque. Elle est constitu\u00e9e de 54 images r\u00e9alis\u00e9es … Continuer la lecture de La galaxie du Triangle (Messier 33) en haute r\u00e9solution<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":10210,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[1261,1262,486,544],"class_list":["post-10209","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-galaxie-du-triangle","tag-messier-33","tag-nasa","tag-telescope-spatial-hubble"],"yoast_head":"\nLa galaxie du Triangle (Messier 33) en haute r\u00e9solution<\/title>\n<meta name=\"description\" content=\"Un assemblage de 54 clich\u00e9s haute r\u00e9solution pris par le t\u00e9lescope spatial Hubble r\u00e9v\u00e8le la richesse stellaire de Messier 33, la galaxie du Triangle.\" \/>\n<meta name=\"robots\" content=\"index, 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