{"id":623,"date":"2013-10-02T11:25:00","date_gmt":"2013-10-02T09:25:00","guid":{"rendered":"https:\/\/kids.esa.int\/europe_prepares_to_map_a_billion_stars\/"},"modified":"2026-10-08T00:30:23","modified_gmt":"2026-10-07T22:30:23","slug":"europe_prepares_to_map_a_billion_stars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/europe_prepares_to_map_a_billion_stars\/","title":{"rendered":"Europa se preg\u0103te\u0219te s\u0103 cartografieze un miliard de stele"},"content":{"rendered":"<div class=\"lede\">\n<p>Cel mai performant observator stelar construit vreodat\u0103 va fi lansat de la baza spa\u021bial\u0103 european\u0103 din Guyana Francez\u0103 pe 19 decembrie. O rachet\u0103 Soyuz va trimite observatorul spa\u021bial de 2 tone, cunoscut sub numele de Gaia, la o distan\u021b\u0103 de 1,5 milioane de kilometri de P\u0103m\u00e2nt. De acolo, acesta va petrece urm\u0103torii cinci ani realiz\u00e2nd un recens\u0103m\u00e2nt al aproximativ unui miliard de stele din galaxia noastr\u0103, Calea Lactee.<\/p>\n<\/div>\n<p>Gaia va transmite cele mai precise date ob\u021binute vreodat\u0103 cu privire la pozi\u021biile, mi\u0219c\u0103rile \u0219i luminozitatea acestor stele. Fiecare dintre stelele selectate va fi observat\u0103 de aproximativ 70 de ori pe parcursul misiunii de cinci ani. Aceasta \u00eenseamn\u0103 o medie de 40 de milioane de observa\u021bii pe zi! Pozi\u021biile obiectelor mai luminoase (care sunt totu\u0219i de 4.000 de ori mai slabe dec\u00e2t cele vizibile cu ochiul liber) vor fi cartografiate cu o precizie comparabil\u0103 cu m\u0103surarea grosimii unui fir de p\u0103r uman de la o distan\u021b\u0103 de 1.000 km.<\/p>\n<p>Pentru a atinge aceast\u0103 precizie remarcabil\u0103, Gaia este echipat\u0103 cu un \u201cochi\u201d extrem de sensibil, cea mai mare camer\u0103 digital\u0103 lansat\u0103 vreodat\u0103 \u00een spa\u021biu. Aceasta \u00eei va permite lui Gaia s\u0103 detecteze obiecte de un milion de ori mai slab luminoase dec\u00e2t pot vedea ochii no\u0219tri. De asemenea, satelitul este echipat cu dou\u0103 telescoape optice \u0219i trei instrumente \u0219tiin\u021bifice, precum \u0219i cu o \u201cfust\u0103\u201d lat\u0103 de 10 metri, care ac\u021bioneaz\u0103 ca un scut solar \u0219i genereaz\u0103 energie solar\u0103.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1500\" data-credit=\"ESA\/Herschel\/PACS\/SPIRE\/J.Fritz, U.Gent\/XMM-Newton\/EPIC\/W. Pietsch, MPE\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/12\/Andromeda_Galaxy_in_infrared_and_X-rays2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2011\/12\/andromeda_galaxy_in_infrared_and_x-rays2\/17896053-2-eng-GB\/Andromeda_Galaxy_in_infrared_and_X-rays.jpg\" alt=\"Andromeda Galaxy in infrared and X-rays\"><figcaption>Galaxia Andromeda \u00een infraro\u0219u \u0219i raze X<\/figcaption><\/figure>\n<p>Principala misiune a misiunii Gaia va fi realizarea unei h\u0103r\u021bi 3D a Galaxiei. Cu toate acestea, se preconizeaz\u0103 c\u0103 va descoperi \u0219i sute de mii de asteroizi \u0219i comete \u00een Sistemul nostru Solar; zeci de mii de stele \u2018e\u0219uate\u2019, numite pitice maro; 20.000 de stele care explodeaz\u0103, numite supernove; \u0219i sute de mii de galaxii active, numite quasari.<\/p>\n<p>Gaia va descoperi, de asemenea, cel pu\u021bin 7.000 de planete care orbiteaz\u0103 \u00een jurul unor stele \u00eendep\u0103rtate. Va realiza acest lucru prin detectarea unor mi\u0219c\u0103ri infime ale pozi\u021biei unei stele, pe m\u0103sur\u0103 ce o planet\u0103 din apropiere exercit\u0103 o for\u021b\u0103 de atrac\u021bie asupra acesteia. P\u00e2n\u0103 la sf\u00e2r\u0219itul misiunii, va fi transmis 1 petabyte (1 milion de gigabyte) de date, suficient pentru a umple 200.000 de DVD-uri.<\/p>","protected":false},"excerpt":{"rendered":"<p>The most powerful star mapper ever built will be launched from Europe\u2019s spaceport in French Guiana on 19 December. A Soyuz rocket will send the 2 tonne space observatory, known [&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\/2013\/10\/artist_s_impression_of_gaia\/17906940-2-eng-GB\/Artist_s_impression_of_Gaia.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/10\/Artist_s_impression_of_Gaia","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-623","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/623","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=623"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/623\/revisions"}],"predecessor-version":[{"id":4590,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/623\/revisions\/4590"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=623"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=623"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=623"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=623"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=623"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=623"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=623"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}