{"id":849,"date":"2010-02-25T13:30:00","date_gmt":"2010-02-25T12:30:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_express_and_the_mystery_of_phobos\/"},"modified":"2026-10-08T00:32:58","modified_gmt":"2026-10-07T22:32:58","slug":"mars_express_and_the_mystery_of_phobos","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/mars_express_and_the_mystery_of_phobos\/","title":{"rendered":"A Mars Express \u00e9s a Phobos rejt\u00e9lye"},"content":{"rendered":"<p>Az ESA Mars Express \u0171rszond\u00e1ja 2003 december\u00e9ben \u00e9rte el a V\u00f6r\u00f6s Bolyg\u00f3t, \u00e9s az\u00f3ta leny\u0171g\u00f6z\u0151 k\u00e9peket \u00e9s egy\u00e9b adatokat k\u00fcld vissza. Noha a Mars a f\u0151 c\u00e9lpontja, az \u0171reszk\u00f6z sarki p\u00e1ly\u00e1ja n\u00e9ha a Phobos k\u00f6zel\u00e9be viszi, amely a bolyg\u00f3 k\u00e9t holdja k\u00f6z\u00fcl a nagyobbik. A legut\u00f3bbi elrep\u00fcl\u00e9si sorozat sor\u00e1n, febru\u00e1r 16. \u00e9s m\u00e1rcius 26. k\u00f6z\u00f6tt, a Mars Express \u00faj rekordot \u00e1ll\u00edt fel azzal, hogy m\u00e1rcius 3-\u00e1n mind\u00f6ssze 50 km-re halad el a Phobos felsz\u00edn\u00e9t\u0151l. Az ilyen k\u00f6zeli megk\u00f6zel\u00edt\u00e9sek sor\u00e1n gy\u0171jt\u00f6tt adatok seg\u00edthetnek megoldani az \u00e9rdekes kis holdat \u00f6vez\u0151 rejt\u00e9lyek egy r\u00e9sz\u00e9t.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2541\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/01\/Mars_Express2\" 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\/2010\/01\/mars_express2\/17902345-2-eng-GB\/Mars_Express.jpg\" alt=\"Mars Express\"><figcaption>Mars Express<\/figcaption><\/figure>\n<p>A Mars Express \u00e9s m\u00e1s \u0171reszk\u00f6z\u00f6k \u00e1ltal visszak\u00fcld\u00f6tt felv\u00e9telek azt mutatj\u00e1k, hogy a Phobos egy megrong\u00e1l\u00f3dott, burgonya alak\u00fa szikla, amelynek \u00e1tm\u00e9r\u0151je kevesebb, mint 28 km. Szinte k\u00f6r alak\u00fa, az egyenl\u00edt\u0151 ment\u00e9n halad\u00f3 p\u00e1ly\u00e1n kering, k\u00f6r\u00fclbel\u00fcl 6000 km-re a bolyg\u00f3 felsz\u00edne felett. Annak \u00e9rdek\u00e9ben, hogy ne csap\u00f3djon bele a Marsba, nagyon nagy sebess\u00e9ggel kell k\u00f6rbej\u00e1rnia a p\u00e1ly\u00e1j\u00e1t. Egy k\u00f6rbefut\u00e1s 7 \u00f3ra 39 percig tart, \u00edgy a bolyg\u00f3n \u00e1ll\u00f3 szeml\u00e9l\u0151 naponta h\u00e1romszor l\u00e1thatn\u00e1 a Phobost nyugatr\u00f3l kelet fel\u00e9 \u00e1thaladni az \u00e9gen.<\/p>\n<p>A tud\u00f3sok t\u00f6bbs\u00e9ge \u00fagy v\u00e9li, hogy ez a kis \u0171rk\u0151 egy aszteroida, amely t\u00fal k\u00f6zel ker\u00fclt a Marshoz, \u00e9s a bolyg\u00f3 gravit\u00e1ci\u00f3ja befogta. Ugyanakkor nagyon neh\u00e9z megmagyar\u00e1zni, hogyan jutott el a Phobos a jelenlegi p\u00e1ly\u00e1j\u00e1ra. A befogott holdak t\u00f6bbs\u00e9ge ugyanis nagyon elliptikus (toj\u00e1s alak\u00fa) p\u00e1ly\u00e1n kering, messze a bolyg\u00f3j\u00e1t\u00f3l. A Mars Express seg\u00edthet megoldani ezt a rejt\u00e9lyt. A tud\u00f3sok a Phobos gravit\u00e1ci\u00f3j\u00e1nak az \u0171reszk\u00f6zre gyakorolt hat\u00e1s\u00e1nak \u00e9s a p\u00e1ly\u00e1j\u00e1nak megv\u00e1ltoz\u00e1s\u00e1nak tanulm\u00e1nyoz\u00e1s\u00e1val t\u00f6bbet tudhatnak meg a hold belsej\u00e9r\u0151l. A kor\u00e1bbi adatok arra utalnak, hogy a Phobos por\u00f3zus k\u0151zethalom lehet, sok \u00fcreges r\u00e9sszel.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s Mars Express orbiter has been sending back remarkable images and other data since it reached the Red Planet in December 2003. Although Mars is its primary target, the spacecraft\u2019s [&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\/2009\/12\/phobos_up_close2\/17873150-2-eng-GB\/Phobos_up_close.jpg","esa_banner_description":"Phobos up close","esa_banner_credit":"ESA\/DLR\/FU Berlin (G. 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