{"id":837,"date":"2004-12-02T15:55:00","date_gmt":"2004-12-02T14:55:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_first_rockets\/"},"modified":"2026-10-08T00:32:50","modified_gmt":"2026-10-07T22:32:50","slug":"the_first_rockets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/the_first_rockets\/","title":{"rendered":"Esimesed raketid"},"content":{"rendered":"<div class=\"lede\">\n<p>K\u00f5ik Maal \u2013 kaasa arvatud meie \u2013 hoitakse paigal raskusj\u00f5u abil. Ilma raskusj\u00f5uta h\u00f5ljuksime k\u00f5ik kosmosesse. R\u00e4\u00e4gitakse, et Isaac Newton avastas raskusj\u00f5u, kui \u00f5un kukkus talle p\u00e4he.<\/p>\n<\/div>\n<p>Kosmosesse j\u00f5udmiseks kasutame raketimootoriga kanderaketti, et \u00fcletada Maa gravitatsiooni t\u00f5mme. Aeg-ajalt on esitatud ka teisi ideid. 1865. aastal soovitas ulmekirjanik Jules Verne kasutada v\u00f5imsat suurt\u00fckki, et saata inimesi Kuule. Viimasel ajal on teadlased uurinud v\u00f5imsate magnetite kasutamist kosmoselaeva orbiidile saatmiseks.<\/p>\n<p>Raketid on olemas olnud juba pikka aega. Need leiutati Hiinas rohkem kui 800 aastat tagasi. Esimesed raketid olid v\u00e4ga lihtsad \u2013 paberist toru, mis oli t\u00e4idetud p\u00fcssirohuga ja kinnitatud juhikepile \u2013 sarnased t\u00e4nap\u00e4eval kasutatavatele ilutulestikele.<\/p>\n<p>Aastal 1232 kasutasid hiinlased neid \u2018tulenooli\u2019, et v\u00f5ita sissetunginud mongoli armee. Teadmised rakettide valmistamisest levisid peagi L\u00e4his-Idasse ja Euroopasse, kus neid kasutati samuti relvadena. Hiljem said need populaarseks ka suurejooneliste ilutulestikute korraldamisel.<\/p>","protected":false},"excerpt":{"rendered":"<p>Everything on Earth \u2013 including us \u2013 is held down by the force of gravity. Without gravity, we would all float off into space. It is said that Isaac Newton [&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\/2004\/12\/rockets_fireworks_cartoon2\/17907457-2-eng-GB\/Rockets_fireworks_cartoon.gif","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/Rockets_fireworks_cartoon2","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":[10,41,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-837","post","type-post","status-publish","format-standard","hentry","category-learn","category-rockets-technology","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/837","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=837"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/837\/revisions"}],"predecessor-version":[{"id":1980,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/837\/revisions\/1980"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=837"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=837"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=837"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=837"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=837"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=837"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=837"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=837"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=837"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}