{"id":1032,"date":"2005-06-29T08:54:00","date_gmt":"2005-06-29T06:54:00","guid":{"rendered":"https:\/\/kids.esa.int\/rosetta_ready_for_the_great_comet_crash\/"},"modified":"2026-10-08T00:35:06","modified_gmt":"2026-10-07T22:35:06","slug":"rosetta_ready_for_the_great_comet_crash","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/rosetta_ready_for_the_great_comet_crash\/","title":{"rendered":"Rosetta valmiina suureen komeetan t\u00f6rm\u00e4ykseen"},"content":{"rendered":"
\n

4. hein\u00e4kuuta NASA:n Deep Impact -avaruusaluksen 370 kg painava kuparinen luotain t\u00f6rm\u00e4\u00e4 komeetta Tempel 1:n j\u00e4iseen ytimeen ja muodostaa valtavan kraatterin. Teleskoopit ymp\u00e4ri maailmaa ja avaruusalukset, kuten NASA:n ja ESA:n yhteinen Hubble-avaruusteleskooppi, seuraavat tarkasti, mit\u00e4 tapahtuu r\u00e4j\u00e4hdysm\u00e4isen t\u00f6rm\u00e4yksen yhteydess\u00e4. Yksi maailman suurimmista t\u00e4htitieteellisist\u00e4 havainto-ohjelmista on mukana my\u00f6s ESA:n Rosetta-komeettaluotain.<\/p>\n<\/div>\n

Rosettalla on viel\u00e4 yhdeks\u00e4n vuotta matkaa, ennen kuin se saavuttaa kohteensa, Churyumov-Gerasimenko-komeetan. Avaruusluotain p\u00e4\u00e4see kuitenkin seuraamaan erinomaisesta n\u00e4k\u00f6alapaikasta toista aurinkokunnan j\u00e4ist\u00e4 rakennuspalikkaa 29. kes\u00e4kuuta ja 14. hein\u00e4kuuta v\u00e4lisen\u00e4 aikana. Rosetta kulkee avaruudessa noin 80 miljoonan kilometrin et\u00e4isyydell\u00e4 komeetasta ja tutkii herkill\u00e4 mittalaitteillaan dramaattista t\u00f6rm\u00e4yst\u00e4 Tempel 1:n kanssa.<\/p>\n

\"Artist's
Taiteilijan n\u00e4kemys Rosetta-avaruusluotaimesta<\/figcaption><\/figure>\n

Ennen t\u00f6rm\u00e4yst\u00e4 Rosetta tarkkailee pime\u00e4\u00e4, j\u00e4ist\u00e4 ytimen kolmea t\u00e4ytt\u00e4 kierrosta. T\u00e4m\u00e4n ansiosta tutkijat saavat tietoa komeetan tilasta ennen t\u00f6rm\u00e4yst\u00e4.<\/p>\n

T\u00f6rm\u00e4yksen aikana ja sen j\u00e4lkeen Rosettan kamera ottaa kaukokuvia ytimest\u00e4 sek\u00e4 avaruuteen sinkoutuvasta kaasu- ja p\u00f6lypilvest\u00e4. Muut mittauslaitteet tutkivat pilven l\u00e4mp\u00f6tilaa ja yritt\u00e4v\u00e4t selvitt\u00e4\u00e4, mist\u00e4 se koostuu.<\/p>\n

Tempel 1 on lyhyen kiertoajan komeetta, joka liikkuu Marsin ja Jupiterin kiertoratojen v\u00e4lill\u00e4. Tutkijat haluavat oppia lis\u00e4\u00e4 t\u00e4llaisista ikivanhoista kappaleista, sill\u00e4 ne ovat j\u00e4\u00e4nteit\u00e4 planeettojen muodostumisesta 4,5 miljardia vuotta sitten.<\/p>","protected":false},"excerpt":{"rendered":"

On 4 July, a 370 kg copper probe from NASA\u2019s Deep Impact spacecraft will crash into the icy heart of comet Tempel 1, creating a huge crater. Telescopes around 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\/2005\/06\/artist_s_impression_of_the_deep_impact_collision2\/17895423-2-eng-GB\/Artist_s_impression_of_the_Deep_Impact_collision.jpg","esa_banner_description":"Artist's impression of the Deep Impact collision","esa_banner_credit":"NASA\/JPL\/UMD\/Pat Rawlings","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/06\/Artist_s_impression_of_the_Deep_Impact_collision2","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1032","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1032"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1032\/revisions"}],"predecessor-version":[{"id":4807,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1032\/revisions\/4807"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1032"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1032"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1032"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1032"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1032"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1032"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1032"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}