{"id":881,"date":"2006-09-07T12:06:00","date_gmt":"2006-09-07T10:06:00","guid":{"rendered":"https:\/\/kids.esa.int\/supernovas\/"},"modified":"2026-10-08T00:33:19","modified_gmt":"2026-10-07T22:33:19","slug":"supernovas","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/supernovas\/","title":{"rendered":"Supernove"},"content":{"rendered":"<div class=\"lede\">\n<p>Din c\u00e2nd \u00een c\u00e2nd, galaxia noastr\u0103, Calea Lactee, este iluminat\u0103 de o explozie uria\u0219\u0103. Cunoscut sub numele de supernov\u0103, acest eveniment violent marcheaz\u0103 moartea unei stele supergigante \u2013 o stea de dimensiuni uria\u0219e, de multe ori mai mare dec\u00e2t Soarele. Una dintre ultimele supernove din Calea Lactee a avut loc \u00een urm\u0103 cu aproximativ 340 de ani \u00een constela\u021bia Cassiopeia, fiind cunoscut\u0103 sub numele de Cassiopeia A (Cas A).<\/p>\n<\/div>\n<p>Cas A se afl\u0103 la zece mii de ani-lumin\u0103 de P\u0103m\u00e2nt. Observatoare precum Telescopul Spa\u021bial Hubble al NASA-ESA au realizat studii detaliate asupra norului r\u0103mas de gaz \u0219i praf str\u0103lucitor.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\/Hubble, NASA and the Hubble Heritage (STScI\/AURA)-ESA\/Hubble Collaboration\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/08\/Zooming_on_Cassiopeia_A2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2006\/08\/zooming_on_cassiopeia_a2\/17894868-2-eng-GB\/Zooming_on_Cassiopeia_A.jpg\" alt=\"Zooming on Cassiopeia A\"><figcaption>M\u0103rirea imaginii asupra stelei Cassiopeia A<\/figcaption><\/figure>\n<p>Imaginile arat\u0103 un inel de material sf\u00e2\u0219iat care se \u00eendep\u0103rteaz\u0103 rapid de locul exploziei. O parte din acest material se deplaseaz\u0103 cu o vitez\u0103 de aproximativ 50 de milioane de km pe or\u0103 (suficient de repede \u00eenc\u00e2t s\u0103 parcurg\u0103 distan\u021ba dintre P\u0103m\u00e2nt \u0219i Lun\u0103 \u00een 30 de secunde!). Imensele v\u00e2rtejuri de resturi str\u0103lucesc deoarece au fost \u00eenc\u0103lzite de unda de \u0219oc provenit\u0103 de la supernov\u0103 \u00een momentul trecerii acesteia pe l\u00e2ng\u0103 ele.<\/p>\n<p>Exist\u0103 mai multe tipuri de explozii de supernov\u0103. Cas A a explodat atunci c\u00e2nd o stea mic\u0103, cunoscut\u0103 sub numele de pitic\u0103 alb\u0103, a atras o cantitate mare de materie de la o stea din apropiere. Pe m\u0103sur\u0103 ce gazul s-a acumulat, pitica alb\u0103 a devenit at\u00e2t de fierbinte \u0219i de activ\u0103 \u00eenc\u00e2t a explodat. Alte supernove apar atunci c\u00e2nd stelele masive r\u0103m\u00e2n f\u0103r\u0103 combustibil nuclear \u00een nucleele lor. Nefiind \u00een m\u0103sur\u0103 s\u0103 mai elibereze energie, nucleul se pr\u0103bu\u0219e\u0219te, distrug\u00e2nd steaua.<\/p>\n<p>Supernovele sunt importante deoarece \u00eempr\u0103\u0219tie material stelar \u00een \u00eentreaga galaxie. Aproape tot ceea ce exist\u0103 pe P\u0103m\u00e2nt (inclusiv noi!) este alc\u0103tuit din elemente (cum ar fi carbonul \u0219i fierul) care provin din acest praf stelar.<\/p>","protected":false},"excerpt":{"rendered":"<p>Every now and again our Milky Way galaxy is lit up by a huge explosion. Known as a supernova, this violent event marks the death of a supergiant \u2013 a [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2006\/08\/hubble_s_view_of_supernova_explosion_cassiopeia_a2\/18245292-2-eng-GB\/Hubble_s_view_of_supernova_explosion_Cassiopeia_A.jpg","esa_banner_description":"Hubble\u2019s view of supernova explosion Cassiopeia A","esa_banner_credit":"NASA, ESA, and the Hubble Heritage (STScI\/AURA)-ESA\/Hubble Collaboration","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/08\/Hubble_s_view_of_supernova_explosion_Cassiopeia_A2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,11,21],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-881","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=881"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/881\/revisions"}],"predecessor-version":[{"id":4717,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/881\/revisions\/4717"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=881"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=881"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=881"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=881"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=881"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=881"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=881"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}