{"id":20575,"date":"2011-10-20T09:20:02","date_gmt":"2011-10-20T06:20:02","guid":{"rendered":"http:\/\/www.lovendal.net\/wp52\/?p=20575"},"modified":"2011-10-20T09:20:02","modified_gmt":"2011-10-20T06:20:02","slug":"eta-carinae-steaua-masiva-ce-s-ar-putea-transforma-in-hipernova-si-ar-putea-distruge-viata-pe-pamant-chiar-si-in-anul-2012","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/eta-carinae-steaua-masiva-ce-s-ar-putea-transforma-in-hipernova-si-ar-putea-distruge-viata-pe-pamant-chiar-si-in-anul-2012\/","title":{"rendered":"Eta Carinae, steaua masiv\u0103 ce s-ar putea transforma \u00een hipernov\u0103 \u015fi ar putea distruge via\u0163a pe P\u0103m\u00e2nt chiar \u015fi \u00een anul 2012"},"content":{"rendered":"<p><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2011\/10\/Supernova-Pamant.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-20576\" title=\"Supernova Pamant\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2011\/10\/Supernova-Pamant.jpg\" alt=\"\" width=\"315\" height=\"221\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2011\/10\/Supernova-Pamant.jpg 315w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2011\/10\/Supernova-Pamant-300x210.jpg 300w\" sizes=\"auto, (max-width: 315px) 100vw, 315px\" \/><\/a>Numele s\u0103u este Eta Carinae. Este o stea, sau ca s\u0103 fim one\u015fti, o stea dubl\u0103. \u015ei se preg\u0103te\u015fte s\u0103 distrug\u0103 totul pe o raz\u0103 de 50.000 de ani-lumin\u0103 \u00een jurul ei, deci inclusiv P\u0103m\u00e2ntul. De\u015fi pu\u0163ini dintre voi a\u0163i auzit de aceast\u0103 stea, totu\u015fi, trebuie s\u0103 fi\u0163i con\u015ftien\u0163i de faptul c\u0103, dac\u0103 lucrurile merg r\u0103u, Eta Carinae ar putea constitui &#8222;bomba&#8221; ce ar duce la dispari\u0163ia umanit\u0103\u0163ii. \u015ei nu, nu este un scenariu hollywoodian, ci este un fapt foarte real. \u00cenc\u0103 o dat\u0103, vine sf\u00e2r\u015fitul lumii.<\/p>\n<p>De\u015fi Eta Carinae e asemenea unui uciga\u015f gata s\u0103 omoare, adev\u0103rul e c\u0103 nu \u015ftim exact c\u00e2nd o va face. Ar putea fi oric\u00e2nd. Iar unii oameni de \u015ftiin\u0163\u0103 cred c\u0103 ar putea fi vorba chiar de fatidicul an 2012.<\/p>\n<p>Dar de unde provine pericolul lui Eta Carinae? Din faptul c\u0103 e o stea extrem de instabil\u0103. Atunci c\u00e2nd ea va exploda, s-ar putea s\u0103 se transforme nu \u00een supernov\u0103, ci \u00een hipernov\u0103. Ce este o hipernov\u0103? E o explozie care se \u00eent\u00e2mpl\u0103 stelelor hipergigante, care au o mas\u0103 de 100 p\u00e2n\u0103 la 300 mai mare dec\u00e2t cea a Soarelui. Atunci c\u00e2nd aceste stele explodeaz\u0103, ele elibereaz\u0103 o energie incredibil\u0103, ca \u015fi cum ar exploda 100 de supernove simultan. Lumina hipernovei uciga\u015fe ar fi at\u00e2t de intens\u0103, \u00eenc\u00e2t lumina ei ar fi vizibil\u0103, peste milioane de ani, \u015fi \u00een alte galaxii ale Universului. De fapt, lumina hipernovei ar putea eclipsa lumina altor stele din galaxia noastr\u0103.<\/p>\n<p>Atunci c\u00e2nd ar deveni hipernov\u0103, Eta Carinae va elibera un &#8222;m\u0103nunchi&#8221; de raze gamma ucig\u0103toare, care, dac\u0103 ar atinge planeta noastr\u0103, ele ar fi echivalentul a unei explozii nucleare de o kiloton\u0103 pe fiecare kilometru p\u0103trat. Ar rezulta astfel circa 200 de milioane de kilotone de explozii nucleare. Absolut totul ar fi devastat pe P\u0103m\u00e2nt \u015fi nimeni \u015fi nimic nu ar mai putea supravie\u0163ui. Precum se \u015ftie, exploziile de raz\u0103 gamma sunt cele mai puternice explozii cunoscute din \u00eentreg Universul, fiind capabile de a elibera at\u00e2t de mult\u0103 energie, c\u00e2t ar face-o Soarele noastre \u00een 10 miliarde de ani de existen\u0163\u0103, \u00een doar 1 minut.<\/p>\n<p>O hipernov\u0103 creeaz\u0103 o zon\u0103 mortal\u0103 de 50.000 de ani-lumin\u0103 \u00een jurul ei. Din p\u0103cate, P\u0103m\u00e2ntul se afl\u0103 la doar 7.500 de ani-lumin\u0103 fa\u0163\u0103 de aceast\u0103 stea.<\/p>\n<p>Oamenii de \u015ftiin\u0163\u0103 cred c\u0103 asemenea explozii au fost cauza a nenum\u0103rate extinc\u0163ii de mas\u0103 \u00een trecutul P\u0103m\u00e2ntului. De exemplu, o echip\u0103 condus\u0103 de astrofizicianul Brian Thomas de la Universitatea Washburn crede c\u0103 o asemenea hipernov\u0103 ar fi provocat extinc\u0163ia de mas\u0103 de pe Terra de acum 440 de milioane de ani. Mul\u0163i cercet\u0103tori cred c\u0103, odat\u0103 la 100 de milioane de ani, razele gamma ucig\u0103toare sunt responsabile pentru dispari\u0163ia speciilor de pe P\u0103m\u00e2nt.<\/p>\n<p>\u00cen momentul de fa\u0163\u0103, Eta Carinae elibereaz\u0103 de 5 milioane de ori mai mult\u0103 energie dec\u00e2t Soarele nostru. Eta Carinae a trecut \u00een ultimele sute de ani prin diverse faze de luminozitate: dac\u0103 prin anii 1840 era cea de a doua stea str\u0103lucitoare de pe bolta cereasc\u0103 (dup\u0103 Sirius), dup\u0103 aceea a urmat o perioad\u0103 \u00een care steaua a devenit invizibil\u0103 ochiului uman. Aceasta \u00eenseamn\u0103 c\u0103 steaua trece prin diverse etape intermediare de explozii, \u00eenainte de explozia final\u0103, prin care se va transforma \u00eentr-o hipernov\u0103.<\/p>\n<p>Dave Pooley, de la Universitatea California din Berkeley, spune c\u0103 dac\u0103 Eta Carinae ar exploda, ar fi at\u00e2t de str\u0103lucitoare, \u00eenc\u00e2t am putea-o observa chiar \u015fi \u00een timpul zilei, iar noaptea am putea chiar citi o carte la lumina ei. Asta, bine\u00een\u0163eles, dac\u0103 \u00eenc\u0103 vom fi vii.<\/p>\n<p>Mario Livio, de la Institutul de \u015etiin\u0163e privind Telescopul Spa\u0163ial din Baltimore, Maryland (SUA), a avertizat c\u0103 Eta Carinae ar putea fi v\u0103zut\u0103 exploz\u00e2nd oric\u00e2nd. \u015ei Stefan Immler, om de \u015ftiin\u0163\u0103 NASA de la Centrul de Zbor Spa\u0163ial Goddard, crede c\u0103 Eta Carinae ar putea exploda \u00een urm\u0103torii ani. Aceasta ar \u00eensemna c\u0103 P\u0103m\u00e2ntul ar mai avea 7.500 de ani la dispozi\u0163ie pentru a se preg\u0103ti? Ei bine, nu chiar a\u015fa. Unii fizicieni de la Agen\u0163ia Spa\u0163ial\u0103 European\u0103 chiar au sugerat faptul c\u0103 e chiar posibil faptul ca Eta Carinae s\u0103 fi ajuns deja hipernov\u0103 cu mii de ani \u00een urm\u0103 \u015fi, astfel, razele mortale s\u0103 ajung\u0103 pe P\u0103m\u00e2nt oric\u00e2nd&#8230;Poate chiar \u00een 2012&#8230;<\/p>\n<p>P.S. Eta Carinae are un concurent serios la producerea sf\u00e2r\u015fitului lumii: e vorba de steaua T-Pyxidis care s-ar putea transforma \u015fi ea \u00een supernov\u0103 \u015fi aduce apocalipsa pe P\u0103m\u00e2nt (<a href=\"https:\/\/www.lovendal.ro\/wp52\/t-pyxidis-supernova-care-va-aduce-sfarsitul-lumii\/\" target=\"_blank\"><strong>https:\/\/www.lovendal.ro\/wp52\/t-pyxidis-supernova-care-va-aduce-sfarsitul-lumii\/<\/strong><\/a>). Oricum, despre Eta Carinae nu e prima oar\u0103 c\u00e2nd vorbim pe acest site (<a href=\"https:\/\/www.lovendal.ro\/wp52\/eta-carina-un-astru-cu-adevarat-nebun\/\" target=\"_blank\"><strong>https:\/\/www.lovendal.ro\/wp52\/eta-carina-un-astru-cu-adevarat-nebun\/<\/strong><\/a>).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Numele s\u0103u este Eta Carinae. Este o stea, sau ca s\u0103 fim one\u015fti, o stea dubl\u0103. \u015ei se preg\u0103te\u015fte s\u0103 distrug\u0103 totul pe o raz\u0103 de 50.000 de ani-lumin\u0103 \u00een jurul ei, deci inclusiv P\u0103m\u00e2ntul. De\u015fi pu\u0163ini dintre voi a\u0163i &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Eta Carinae, steaua masiv\u0103 ce s-ar putea transforma \u00een hipernov\u0103 \u015fi ar putea distruge via\u0163a pe P\u0103m\u00e2nt chiar \u015fi \u00een anul 2012\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/eta-carinae-steaua-masiva-ce-s-ar-putea-transforma-in-hipernova-si-ar-putea-distruge-viata-pe-pamant-chiar-si-in-anul-2012\/#more-20575\" aria-label=\"Cite\u0219te mai multe despre Eta Carinae, steaua masiv\u0103 ce s-ar putea transforma \u00een hipernov\u0103 \u015fi ar putea distruge via\u0163a pe P\u0103m\u00e2nt chiar \u015fi \u00een anul 2012\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":20576,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[106],"tags":[1017,102,3566,433,4628,150,105,2467,1124,1673,865,733,9803,2317],"class_list":["post-20575","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stiinta","tag-1017","tag-astronomie","tag-eta-carina","tag-galaxie","tag-hipernova","tag-nasa","tag-pamant","tag-raze-gamma","tag-sfarsitul-lumii","tag-sirius","tag-soare","tag-stea","tag-stiinta","tag-supernova","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Eta Carinae, steaua masiv\u0103 ce s-ar putea transforma \u00een hipernov\u0103 \u015fi ar putea distruge via\u0163a pe P\u0103m\u00e2nt chiar \u015fi \u00een anul 2012 - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/eta-carinae-steaua-masiva-ce-s-ar-putea-transforma-in-hipernova-si-ar-putea-distruge-viata-pe-pamant-chiar-si-in-anul-2012\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Eta Carinae, steaua masiv\u0103 ce s-ar putea transforma \u00een hipernov\u0103 \u015fi ar putea distruge via\u0163a pe P\u0103m\u00e2nt chiar \u015fi \u00een anul 2012\" \/>\n<meta property=\"og:description\" content=\"Numele s\u0103u este Eta Carinae. 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