{"id":851,"date":"2006-08-23T09:22:00","date_gmt":"2006-08-23T07:22:00","guid":{"rendered":"https:\/\/kids.esa.int\/useful_space_did_you_know_that\/"},"modified":"2026-10-08T00:32:59","modified_gmt":"2026-10-07T22:32:59","slug":"useful_space_did_you_know_that","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/useful_space_did_you_know_that\/","title":{"rendered":"Tudtad, hogy\u2026"},"content":{"rendered":"<div class=\"lede\">\n<p>Az els\u0151 t\u00e1vk\u00f6zl\u00e9si m\u0171hold a Hold volt. Az amerikai hadsereg m\u00e9rn\u00f6kei 1951-ben a Holdr\u00f3l visszaver\u0151d\u0151 jeleket haszn\u00e1ltak. Ezt 1955-ben is megism\u00e9telt\u00e9k, egy napvihar \u00e1ltal okozott t\u00e1vk\u00f6zl\u00e9si kimarad\u00e1s idej\u00e9n.<\/p>\n<\/div>\n<p>Az els\u0151 mesters\u00e9ges t\u00e1vk\u00f6zl\u00e9si m\u0171holdak k\u00f6z\u00fcl kett\u0151 nagy, f\u00e9nyes l\u00e9gg\u00f6mb volt, amelyek visszat\u00fckr\u00f6zt\u00e9k a r\u00e1di\u00f3jeleket. Ezeket Echo 1-nek \u00e9s 2-nek nevezt\u00e9k el.<\/p>","protected":false},"excerpt":{"rendered":"<p>The first communications satellite was the Moon. US Army engineers bounced signals off the Moon in 1951. They did so again in 1955, during a communications blackout caused by a [&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\/2000\/11\/telescopic_view_of_the_whole_moon_seen_from_earth2\/17865823-3-eng-GB\/Telescopic_view_of_the_whole_Moon_seen_from_Earth.jpg","esa_banner_description":"Telescopic view of the whole Moon seen from Earth","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/11\/Telescopic_view_of_the_whole_Moon_seen_from_Earth2","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":[10,54,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-851","post","type-post","status-publish","format-standard","hentry","category-learn","category-space-technologies-on-earth","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/851","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=851"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/851\/revisions"}],"predecessor-version":[{"id":1994,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/851\/revisions\/1994"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=851"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=851"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=851"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=851"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=851"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=851"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=851"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}