\nEste vorba despre o stea \u015fi o posibil\u0103 planet\u0103 care se deplaseaz\u0103 prin spa\u0163iu cu o vitez\u0103 uluitoare de 1,2 milioane de mile pe or\u0103 (540 de kilometri pe secund\u0103), de dou\u0103 ori mai rapid dec\u00e2t viteza obi\u015fnuit\u0103 a Sistemului nostru Solar.<\/p>\n
\nAstronomii cred c\u0103 au identificat o planet\u0103 de tip \u201esuper-Neptun” care orbiteaz\u0103 \u00een jurul unei stele cu mas\u0103 mic\u0103, la o distan\u0163\u0103 comparabil\u0103 cu cea dintre Venus \u015fi P\u0103m\u00e2nt \u00een sistemul nostru solar. Dac\u0103 observa\u0163iile se confirm\u0103, aceasta ar fi prima planet\u0103 descoperit\u0103 vreodat\u0103 care orbiteaz\u0103 o stea cu vitez\u0103 hiperbolic\u0103.<\/p>\n
\nCele dou\u0103 obiecte au fost observate ini\u0163ial \u00een 2011, \u00een cadrul proiectului Microlensing Observations in Astrophysics (MOA) de la Observatorul Mount John din Noua Zeeland\u0103. Cercet\u0103torii au putut determina atunci c\u0103 unul dintre obiecte este de 2.300 de ori mai masiv dec\u00e2t cel\u0103lalt, dar masa exact\u0103 a r\u0103mas necunoscut\u0103.<\/p>\n
\nRecent, folosind date de la Observatorul Keck din Hawaii \u015fi de la satelitul Gaia al Agen\u0163iei Spa\u0163iale Europene, oamenii de \u015ftiin\u0163\u0103 au localizat sistemul \u00een centrul aglomerat al C\u0103ii Lactee. Viteza lor este at\u00e2t de mare \u00eenc\u00e2t ar putea dep\u0103\u015fi viteza de evadare a galaxiei noastre, estimat\u0103 la 550-600 kilometri pe secund\u0103, ceea ce \u00eenseamn\u0103 c\u0103 sistemul ar putea s\u0103 p\u0103r\u0103seasc\u0103 \u00een cele din urm\u0103 Calea Lactee.<\/p>\n
\nCu toate acestea, cercet\u0103torii vor s\u0103 confirme dac\u0103 steaua identificat\u0103 este \u00eentr-adev\u0103r parte din sistemul observat \u00een 2011. Pentru acest lucru, vor continua observa\u0163iile timp de \u00eenc\u0103 un an pentru a vedea dac\u0103 steaua se deplaseaz\u0103 \u00een direc\u0163ia \u015fi cu viteza a\u015fteptat\u0103. Dac\u0103 steaua r\u0103m\u00e2ne sta\u0163ionar\u0103, atunci ar putea fi vorba despre un alt scenariu: o planet\u0103 vagabond\u0103 de dimensiunea lui Jupiter care are o lun\u0103 mai mic\u0103 dec\u00e2t P\u0103m\u00e2ntul.<\/p>\n
\nStudiu a fost publicat \u00een The Astronomical Journal \u015fi este citat de Scince Alert.<\/p>\n","protected":false},"excerpt":{"rendered":"
NASA a descoperit ceea ce ar putea fi cel mai rapid sistem planetar cunoscut p\u00e2n\u0103 acum, aflat la aproximativ 24.000 de ani-lumin\u0103 de P\u0103m\u00e2nt, \u00een centrul dens al galaxiei noastre.<\/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":[347,59677],"class_list":["post-234200","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-nasa","tag-sistem-planetar"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/234200","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=234200"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/234200\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=234200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=234200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=234200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}