{"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\/sl\/supernovas\/","title":{"rendered":"Supernove"},"content":{"rendered":"
\n

Na\u0161a galaksija, Mle\u010dna pot, se ob\u010dasno razsvetli zaradi ogromne eksplozije. Ta nasilen pojav, znan kot supernova, ozna\u010duje smrt supervelikana \u2013 zvezde velike mase, ki je mnogokrat ve\u010dja od Sonca. Ena od zadnjih supernov v galaksiji Mle\u010dna pot se je zgodila pred pribli\u017eno 340 leti v ozvezdju Kasiopeje, zato je znana kot Kasiopeja A (Cas A).<\/p>\n<\/div>\n

Cas A se nahaja deset tiso\u010d svetlobnih let od Zemlje. Observatoriji, kot je vesoljski teleskop Hubble, ki ga upravljata NASA in ESA, so podrobno preu\u010dili preostali oblak \u017eare\u010dega plina in prahu.<\/p>\n

\"Zooming
Pribli\u017eevanje Cassiopeia A<\/figcaption><\/figure>\n

Na posnetkih je videti raztrgan obro\u010d snovi, ki se hitro oddaljuje od mesta eksplozije. Del te snovi se giblje s hitrostjo pribli\u017eno 50 milijonov km na uro (kar je dovolj hitro, da bi v 30 sekundah prepotoval razdaljo od Zemlje do Lune!). Ogromni vrtinci ostankov \u017earijo, ker jih je segrela udarna valovna supernove, ko je ta letela mimo.<\/p>\n

Obstaja ve\u010d vrst eksplozij supernov. Cas A je eksplodirala, ko je majhna zvezda, znana kot bela pritlikavka, privlekla veliko snovi iz bli\u017enje zvezde. Ko se je plin kopi\u010dil, je bela pritlikavka postala tako vro\u010da in aktivna, da je eksplodirala. Druge supernove nastanejo, ko se v jedrih masivnih zvez iz\u010drpa jedrsko gorivo. Ker jedro ne more ve\u010d oddajati energije, se sesede in uni\u010di zvezdo.<\/p>\n

Supernove so pomembne, ker po galaksiji raz\u0161irjajo zvezdno snov. Skoraj vse na Zemlji (vklju\u010dno z nami!) je sestavljeno iz elementov (kot sta ogljik in \u017eelezo), ki izvirajo iz tega zvezdnega prahu.<\/p>","protected":false},"excerpt":{"rendered":"

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 […]<\/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\/sl\/wp-json\/wp\/v2\/posts\/881","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=881"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/881\/revisions"}],"predecessor-version":[{"id":4717,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/881\/revisions\/4717"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=881"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=881"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=881"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=881"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=881"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=881"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=881"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}