{"id":923,"date":"2004-11-16T10:04:00","date_gmt":"2004-11-16T09:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/exploring_asteroids\/"},"modified":"2026-10-08T00:33:49","modified_gmt":"2026-10-07T22:33:49","slug":"exploring_asteroids","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/exploring_asteroids\/","title":{"rendered":"Explorarea asteroizilor"},"content":{"rendered":"
\n

Majoritatea asteroizilor sunt at\u00e2t de mici \u0219i de departe \u00eenc\u00e2t \u00eei putem vedea doar ca ni\u0219te puncte minuscule de lumin\u0103. Ace\u0219tia sunt descoperi\u021bi datorit\u0103 mi\u0219c\u0103rii lor \u00een fa\u021ba \u2018stelelor fixe\u2019 de pe cerul nocturn. Afl\u0103m mai multe despre ei folosind telescoape mari pentru a studia lumina pe care o reflect\u0103.<\/p>\n<\/div>\n

Cu toate acestea, nici m\u0103car Telescopul Spa\u021bial Hubble nu poate dezv\u0103lui prea multe despre ei. Unul dintre cei mai interesan\u021bi asteroizi este Vesta, bogat \u00een metale. Imaginile realizate de Hubble arat\u0103 un corp ceresc destul de rotund, cu un crater de impact de mari dimensiuni.<\/p>\n

Unii asteroizi care trec la mic\u0103 distan\u021b\u0103 de P\u0103m\u00e2nt au fost studia\u021bi cu ajutorul radarului. Ecourile radar sunt captate de radiotelescoape de mari dimensiuni \u0219i sunt folosite pentru a le determina forma \u0219i dimensiunea.<\/p>\n

C\u00e2\u021biva asteroizi au fost studia\u021bi mai \u00een detaliu de c\u0103tre navele spa\u021biale care i-au vizitat. Imaginile prezint\u0103 obiecte cu numeroase cratere, ceea ce arat\u0103 c\u0103 au fost lovite de coliziuni de-a lungul a miliarde de ani. \u00cen anul 2000, NEAR Shoemaker a devenit prima sond\u0103 spa\u021bial\u0103 care a intrat pe orbita unui asteroid. Sonda \u0219i-a \u00eencheiat misiunea prin efectuarea unei ateriz\u0103ri istorice pe Eros, unul dintre cei mai mari asteroizi apropia\u021bi de P\u0103m\u00e2nt.<\/p>\n

Sonda spa\u021bial\u0103 Rosetta a ESA a trecut, de asemenea, pe l\u00e2ng\u0103 doi asteroizi din centura principal\u0103 \u2013 Steins \u0219i Lutetia \u2013 \u00een drumul s\u0103u c\u0103tre o comet\u0103. Cu un diametru de aproximativ 130 km, Lutetia a fost cel mai mare asteroid vizitat p\u00e2n\u0103 acum de o sond\u0103 spa\u021bial\u0103. ESA studiaz\u0103, de asemenea, modalit\u0103\u021bi de a devia de la traiectorie un asteroid care se \u00eendreapt\u0103 spre P\u0103m\u00e2nt.<\/p>","protected":false},"excerpt":{"rendered":"

Most asteroids are so small and so far away that we can only see them as tiny points of light. They are found through their movement in front of the […]<\/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\/asteroids_come_in_many_shapes_and_sizes2\/17886580-2-eng-GB\/Asteroids_come_in_many_shapes_and_sizes.jpg","esa_banner_description":"Asteroids come in many shapes and sizes","esa_banner_credit":"courtesy Observatoire de Paris","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Asteroids_come_in_many_shapes_and_sizes2","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-923","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\/923","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=923"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/923\/revisions"}],"predecessor-version":[{"id":2066,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/923\/revisions\/2066"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=923"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=923"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=923"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=923"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=923"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=923"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=923"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}