{"id":121322,"date":"2015-05-01T14:02:23","date_gmt":"2015-05-01T14:02:23","guid":{"rendered":"https:\/\/bm.dev.synology.me\/?p=121322"},"modified":"2015-05-01T14:02:23","modified_gmt":"2015-05-01T14:02:23","slug":"sonda-spatiala-messenger-si-a-incheiat-misiunea-si-s-a-prabusit-pe-planeta-mercur","status":"publish","type":"post","link":"https:\/\/bm.dev.synology.me\/?p=121322","title":{"rendered":"Sonda spa\u0163ial\u0103 Messenger \u015fi-a \u00eencheiat misiunea \u015fi s-a pr\u0103bu\u015fit pe planeta Mercur"},"content":{"rendered":"<p>\n<strong>Cercet\u0103torii de la Johns Hopkins University Applied Physics Laboratory din statul american Maryland au estimat c\u0103 sonda Messenger, deplas\u00e2ndu-se \u00een spa\u0163iu cu o vitez\u0103 de 14.000 de kilometri pe or\u0103, s-a pr\u0103bu\u015fit \u00een apropiere de polul nordic al planetei Mercur, joi sear\u0103, \u00een jurul orei 19.26 GMT.<\/strong><\/p>\n<p>\nMessenger, care nu mai avea carburant \u00een rezervoarele sale, a compensat for\u0163a de gravita\u0163ie a Soarelui \u015fi s-a pr\u0103bu\u015fit pe Mercur, gener\u00e2nd un crater cu diametrul de aproximativ 16 metri.<\/p>\n<p>\n<strong>\u00cen timpul ultimelor s\u0103pt\u0103m\u00e2ni petrecute pe orbita lui Mercur, sonda Messenger a transmis cercet\u0103torilor numeroase informa\u0163ii inedite despre cea mai apropiat\u0103 planet\u0103 de Soare din Sistemul Solar, descoperind fragmente de ghea\u0163\u0103 \u00een interiorul unora dintre craterele sale, \u00een ciuda faptului c\u0103 Mercur se afl\u0103 foarte aproape de Soare, la o distan\u0163\u0103 de peste dou\u0103 ori mai mic\u0103 dec\u00e2t distan\u0163a dintre Terra \u015fi Soare.<\/strong><\/p>\n<p>\nMessenger (Mercury Surface Space ENvironment GEochemistry and Ranging) este prima sond\u0103 care a analizat de la mic\u0103 distan\u0163\u0103 planeta Mercur, dup\u0103 cele trei survol\u0103ri reu\u015fite de sonda Mariner 10, operat\u0103 tot de NASA, la mijlocul anilor 1970. Sonda Messenger s-a plasat pe orbita planetei Mercur \u00een 2011, dup\u0103 o c\u0103l\u0103torie \u00een spa\u0163iu care a durat \u015fase ani.<\/p>\n<p>\n\u00cen timpul celor 4.104 rota\u0163ii efectuate \u00een jurul lui Mercur, sonda Messenger a f\u0103cut c\u00e2teva descoperiri surprinz\u0103toare, detect\u00e2nd potasiu, sulf \u015fi alte substan\u0163e volatile pe suprafa\u0163a planetei, care ar fi trebuit s\u0103 se fi evaporat de mult\u0103 vreme, potrivit oamenilor de \u015ftiin\u0163\u0103, din cauza temperaturilor extrem de ridicate de pe Mercur. Suprafa\u0163a medie de la suprafa\u0163a planetei Mercur este de 167 de grade Celsius. \u00cen timpul zilei, temperaturile de pe aceast\u0103 planet\u0103 ajung p\u00e2n\u0103 la 427 de grade Celsius.<\/p>\n<p>\nMessenger a confirmat de asemenea existen\u0163a ghe\u0163ii \u015fi a altor materii, posibil organice, \u00een interiorul unor cratere \u00een care razele solare nu pot s\u0103 ajung\u0103. \u00cen timpul ultimelor zile ale misiunii sale, Messenger a \u00eencercat s\u0103 &#8220;priveasc\u0103&#8221; \u00een mod direct \u00een interiorul unor cratere. Sonda american\u0103 a descoperit dovezi care atest\u0103 existen\u0163a unei activit\u0103\u0163i vulcanice \u00een trecutul acestei planete \u015fi dovezi ale faptului c\u0103 acest corp ceresc dens \u015fi care se mic\u015foreaz\u0103 are un nucleu din fier lichid.<\/p>\n<p>\nUniunea European\u0103 \u015fi Japonia au \u00eencheiat un parteneriat \u015fi vor coordona \u00eempreun\u0103 o nou\u0103 misiune spa\u0163ial\u0103 de studiere a planetei Mercur, denumit\u0103 BepiColombo, care va fi lansat\u0103 \u00een anul 2017.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sonda spa\u0163ial\u0103 Messenger, administrat\u0103 de NASA, \u015fi-a \u00eencheiat misiunea ei de patru ani, ce a constat \u00een studierea planetei Mercur, pr\u0103bu\u015findu-se joi, a\u015fa cum era prev\u0103zut, pe suprafa\u0163a acestui corp ceresc, au anun\u0163at oamenii de \u015ftiin\u0163\u0103 americani, cita\u0163i de Reuters.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[18439,14155,347],"class_list":["post-121322","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-mercur","tag-messenger","tag-nasa"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/121322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=121322"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/121322\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=121322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=121322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=121322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}