{"id":1139,"date":"2004-11-19T09:40:00","date_gmt":"2004-11-19T08:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/new_transport\/"},"modified":"2026-10-08T00:36:27","modified_gmt":"2026-10-07T22:36:27","slug":"new_transport","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/new_transport\/","title":{"rendered":"Novi prevoz"},"content":{"rendered":"
\n

Vesolje je ogromno. Potovanje na Luno \u2013 na\u0161o sosedo v vesolju \u2013 bo z obi\u010dajnimi kemi\u010dnimi raketami trajalo tri dni. Potovanja na Mars, k asteroidom in zunanjim planetom bi trajala ve\u010d mesecev ali celo let.<\/p>\n<\/div>\n

Med dolgimi potovanji se zdravje in telesna pripravljenost astronavtov poslab\u0161ata zaradi izpostavljenosti sevanju in brezte\u017enosti. Dolge misije zahtevajo tudi ve\u010d zraka, vode in hrane ter pove\u010dajo verjetnost, da pride do nepredvidenih te\u017eav. Toda kako bi bilo mogo\u010de misije skraj\u0161ati?<\/p>\n

Eden od na\u010dinov je pove\u010danje u\u010dinkovitosti raketnih motorjev. In\u017eenirji ESA so \u017ee izdelali elektri\u010dni pogonski sistem za misijo SMART-1 na Luno. Elektri\u010dni motorji so precej manj\u0161i in la\u017eji od obi\u010dajnih motorjev. \u010ceprav porabijo precej manj goriva, lahko dose\u017eejo vi\u0161jo izstopno hitrost \u2013 hitrost, s katero plin iz motorja izstreljuje v vesolje.<\/p>\n

Z uporabo elektri\u010dne energije, ki jo pridobivajo son\u010dni \u017earki, ki padajo na \u2018krila\u2019 iz son\u010dnih celic, lahko postopoma pove\u010dujejo hitrost vesoljskega plovila, dokler ne dose\u017ee hitrosti, ki je ve\u010dkrat ve\u010dja od hitrosti kemi\u010dne rakete.<\/p>\n

Za misije dale\u010d od Sonca bodo potrebni jedrski pogoni. Z uporabo tak\u0161nih pogonov bo morda s\u010dasoma mogo\u010de prileteti na Mars v le nekaj dneh.<\/p>","protected":false},"excerpt":{"rendered":"

Space is vast. A trip to the Moon – our neighbour in space \u2013 will take three days using normal chemical rockets. Journeys to Mars, the asteroids and the outer […]<\/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\/11\/smart-1_showing_off_ion_engine2\/17872705-2-eng-GB\/SMART-1_showing_off_ion_engine.jpg","esa_banner_description":"SMART-1 showing off ion engine","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/11\/SMART-1_showing_off_ion_engine2","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":[62,10,13],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1139","post","type-post","status-publish","format-standard","hentry","category-exploration","category-learn","category-life-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=1139"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1139\/revisions"}],"predecessor-version":[{"id":2282,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/1139\/revisions\/2282"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=1139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=1139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=1139"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=1139"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=1139"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=1139"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=1139"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=1139"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=1139"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=1139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}