{"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\/ro\/the_first_rockets\/","title":{"rendered":"Primele rachete"},"content":{"rendered":"
\n

Tot ce exist\u0103 pe P\u0103m\u00e2nt \u2013 inclusiv noi \u2013 este \u021binut la sol de for\u021ba gravita\u021biei. F\u0103r\u0103 gravita\u021bie, am pluti cu to\u021bii \u00een spa\u021biu. Se spune c\u0103 Isaac Newton a descoperit gravita\u021bia atunci c\u00e2nd un m\u0103r i-a c\u0103zut \u00een cap.<\/p>\n<\/div>\n

Pentru a ajunge \u00een spa\u021biu, folosim o rachet\u0103 de lansare cu propulsie pe baz\u0103 de combustibil pentru a \u00eenvinge for\u021ba de atrac\u021bie gravita\u021bional\u0103 a P\u0103m\u00e2ntului. Din c\u00e2nd \u00een c\u00e2nd au fost propuse \u0219i alte idei. \u00cen 1865, scriitorul de science-fiction Jules Verne a sugerat folosirea unui tun puternic pentru a trimite oameni pe Lun\u0103. Mai recent, oamenii de \u0219tiin\u021b\u0103 au studiat utilizarea unor magne\u021bi puternici pentru a trimite o nav\u0103 spa\u021bial\u0103 pe orbit\u0103.<\/p>\n

Rachetele exist\u0103 de mult timp. Au fost inventate \u00een China, cu mai bine de 800 de ani \u00een urm\u0103. Primele rachete erau foarte simple \u2013 un tub de carton umplut cu praf de pu\u0219c\u0103 \u0219i fixat de un b\u0103\u021b de ghidare \u2013 asem\u0103n\u0103toare cu artificiile pe care le folosim ast\u0103zi.<\/p>\n

\u00cen 1232, chinezii au folosit aceste \u2018s\u0103ge\u021bi de foc\u2019 pentru a \u00eenvinge armata mongol\u0103 invadatoare. Cuno\u0219tin\u021bele privind fabricarea rachetelor s-au r\u0103sp\u00e2ndit cur\u00e2nd \u00een Orientul Mijlociu \u0219i \u00een Europa, unde au fost folosite \u0219i ele ca arme. Ulterior, au devenit populare \u0219i pentru spectacolele de artificii.<\/p>","protected":false},"excerpt":{"rendered":"

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 […]<\/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\/ro\/wp-json\/wp\/v2\/posts\/837","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=837"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/837\/revisions"}],"predecessor-version":[{"id":1980,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/837\/revisions\/1980"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=837"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=837"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=837"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=837"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=837"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=837"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=837"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=837"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=837"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}