{"id":624,"date":"2013-09-19T09:25:00","date_gmt":"2013-09-19T07:25:00","guid":{"rendered":"https:\/\/kids.esa.int\/re-entry_nears_for_esa_s_ferrari_of_space\/"},"modified":"2026-10-08T00:30:24","modified_gmt":"2026-10-07T22:30:24","slug":"re-entry_nears_for_esa_s_ferrari_of_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/re-entry_nears_for_esa_s_ferrari_of_space\/","title":{"rendered":"Se apropie momentul reintr\u0103rii \u00een atmosfer\u0103 a \u2018Ferrari-ului spa\u021biului\u2019 al ESA\u2019"},"content":{"rendered":"<div class=\"lede\">\n<p>Dup\u0103 mai bine de patru ani petrecu\u021bi pe orbit\u0103, misiunea GOCE a ESA se apropie de final. La jum\u0103tatea lunii octombrie, satelitul va r\u0103m\u00e2ne f\u0103r\u0103 combustibil, iar orbita sa va \u00eencepe s\u0103 se degradeze. Se preconizeaz\u0103 c\u0103 reintrarea \u00een atmosfer\u0103 va avea loc aproximativ trei s\u0103pt\u0103m\u00e2ni mai t\u00e2rziu.<\/p>\n<\/div>\n<p>GOCE orbiteaz\u0103 \u00een jurul P\u0103m\u00e2ntului din martie 2009, la o altitudine de mai pu\u021bin de 270 km, neobi\u0219nuit de mic\u0103 pentru un satelit \u0219tiin\u021bific. Misiunea sa a fost aceea de a cartografia, cu o precizie de neegalat, varia\u021biile infime ale gravita\u021biei la suprafa\u021ba P\u0103m\u00e2ntului.<\/p>\n<p>Gravita\u021bia este for\u021ba care atrage totul spre sol. Cu toate acestea, for\u021ba gravita\u021bional\u0103 a P\u0103m\u00e2ntului variaz\u0103 u\u0219or de la un loc la altul. Acest lucru se datoreaz\u0103, \u00een parte, faptului c\u0103 planeta nu este perfect rotund\u0103 \u2013 este u\u0219or aplatizat\u0103 la poli. Gravita\u021bia este influen\u021bat\u0103, de asemenea, de mun\u021bii \u00eenal\u021bi \u0219i de \u0219an\u021burile oceanice ad\u00e2nci, precum \u0219i de grosimea \u0219i densitatea oceanelor \u0219i a straturilor de roc\u0103.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"3000\" data-credit=\"ESA\/HPF\/DLR\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/03\/New_GOCE_geoid2\" 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\/03\/new_goce_geoid2\/17882511-2-eng-GB\/New_GOCE_geoid.jpg\" alt=\"New GOCE geoid\"><figcaption>Noul geoid GOCE<\/figcaption><\/figure>\n<p>Pe m\u0103sur\u0103 ce GOCE traverseaz\u0103 regiuni cu for\u021be gravita\u021bionale diferite, nava spa\u021bial\u0103 se mi\u0219c\u0103 \u00een sus \u0219i \u00een jos, iar instrumentele sale \u00eenregistreaz\u0103 aceste modific\u0103ri ale traiectoriei. Aceste m\u0103sur\u0103tori precise au fost posibile datorit\u0103 orbitei joase \u0219i designului s\u0103u aerodinamic \u0219i elegant, ceea ce i-a adus porecla de \u2018Ferrari-ul spa\u021biului\u2019. Acest satelit unic este, de asemenea, extrem de stabil, neav\u00e2nd niciuna dintre piesele mobile utilizate adesea la alte nave spa\u021biale.<\/p>\n<p>Datele furnizate de GOCE au fost utilizate pentru studierea curen\u021bilor oceanici, a varia\u021biilor nivelului m\u0103rii, a altitudinii suprafe\u021bei terestre \u0219i a structurii stratificate a scoar\u021bei terestre. Satelitul a detectat chiar \u0219i v\u00e2nturi \u00een spa\u021biu \u0219i unde sonore care s-au propagat \u00een sus prin atmosfer\u0103 dup\u0103 cutremurul devastator care a lovit Japonia la 11 martie 2011. Poate c\u0103 cel mai important rezultat a fost un model remarcabil de precis (cunoscut sub numele de \u2018geoid\u2019) al gravita\u021biei P\u0103m\u00e2ntului. Geoidul arat\u0103 cum ar ar\u0103ta P\u0103m\u00e2ntul dac\u0103 gravita\u021bia ar fi egal\u0103 peste tot pe suprafa\u021ba sa, astfel \u00eenc\u00e2t apa s\u0103 nu curg\u0103 dintr-un punct \u00een altul.<\/p>","protected":false},"excerpt":{"rendered":"<p>After more than four years in orbit, ESA\u2019s GOCE mission is nearing its end. In mid-October, the satellite will run out of fuel and its orbit will begin to decay. 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