{"id":193,"date":"2021-12-02T12:45:12","date_gmt":"2021-12-02T11:45:12","guid":{"rendered":"https:\/\/kids.esa.int\/comets\/"},"modified":"2026-10-08T00:25:20","modified_gmt":"2026-10-07T22:25:20","slug":"comets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/comets\/","title":{"rendered":"Cometele"},"content":{"rendered":"
\n

Oamenii din vechime se temeau de comete \u2013 se spunea c\u0103 acestea aduc ghinion sau prezic dezastre. Ast\u0103zi \u0219tim c\u0103 cometele sunt mici lumi de ghea\u021b\u0103 r\u0103mase \u00een urma form\u0103rii planetelor. Se estimeaz\u0103 c\u0103 exist\u0103 miliarde de comete la marginea Sistemului Solar, dincolo de orbita lui Pluto.<\/p>\n<\/div>\n

Majoritatea cometelor sunt at\u00e2t de mici \u0219i de \u00eendep\u0103rtate \u00eenc\u00e2t nu le putem vedea, nici m\u0103car cu cele mai mari telescoape. \u00cens\u0103 le putem observa atunci c\u00e2nd se \u00eendreapt\u0103 spre Soare \u0219i le cresc cozi de gaz \u0219i praf. (Cuv\u00e2ntul \u2018comet\u0103\u2019 \u00eenseamn\u0103 \u201estea cu p\u0103r\u201d.)<\/p>\n

C\u0103ldura Soarelui transform\u0103 ghea\u021ba \u00een gaz, care se r\u0103sp\u00e2nde\u0219te pe milioane de kilometri \u00een spa\u021biu. \u00cen ciuda lungimii lor, particulele de praf pe care le con\u021bin nu sunt mai mari dec\u00e2t boabele de nisip.<\/p>\n

\"Rosetta
Rosetta \u2013 v\u00e2n\u0103toarea de comete<\/figcaption><\/figure>\n

Unele comete parcurg o orbit\u0103 \u00een jurul Soarelui \u00een doar c\u00e2\u021biva ani. Altele \u2013 precum cometa Halley \u2013 au nevoie de mult mai mult timp. Altele apar o singur\u0103 dat\u0103 \u0219i nu mai sunt v\u0103zute niciodat\u0103. Sonda spa\u021bial\u0103 SOHO a ESA a fost utilizat\u0103 pentru a descoperi mii de comete mici care trec foarte aproape de Soare. Multe dintre ele se pr\u0103bu\u0219esc \u00een Soare sau sunt sf\u00e2\u0219iate de puternica sa gravita\u021bie.<\/p>\n

\u00cen 2014, sonda spa\u021bial\u0103 european\u0103 Rosetta va intra \u00een istorie prin intrarea pe orbita unei comete \u0219i prin lansarea unui modul de aterizare pe suprafa\u021ba acesteia.<\/p>","protected":false},"excerpt":{"rendered":"

Ancient people were afraid of comets \u2013 they were said to bring bad luck or foretell disaster. We now know that comets are small ice worlds that have been left […]<\/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\/2003\/04\/giotto_s_art_shows_a_comet_in_the_background2\/17913109-2-eng-GB\/Giotto_s_art_shows_a_comet_in_the_background.jpg","esa_banner_description":"Giotto's art shows a comet in the background","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Giotto_s_art_shows_a_comet_in_the_background2","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":[46,10,11],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-193","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/193","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=193"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/193\/revisions"}],"predecessor-version":[{"id":4350,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/193\/revisions\/4350"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=193"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=193"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=193"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=193"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=193"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=193"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=193"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=193"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}