{"id":131264,"date":"2025-10-24T22:00:14","date_gmt":"2025-10-24T22:00:14","guid":{"rendered":"https:\/\/kamucalisani.net\/?p=131264"},"modified":"2025-10-24T22:00:14","modified_gmt":"2025-10-24T22:00:14","slug":"dunyadan-18-isik-yili-uzakta-yasama-elverisli-kayalik-bir-otegezegen-bulundu","status":"publish","type":"post","link":"https:\/\/kamucalisani.net\/index.php\/2025\/10\/24\/dunyadan-18-isik-yili-uzakta-yasama-elverisli-kayalik-bir-otegezegen-bulundu\/","title":{"rendered":"D\u00fcnya’dan 18 \u0131\u015f\u0131k y\u0131l\u0131 uzakta ya\u015fama elveri\u015fli, kayal\u0131k bir \u00f6tegezegen bulundu"},"content":{"rendered":"

<\/span> Son y\u0131llarda \u00f6tegezegen<\/strong> ara\u015ft\u0131rmalar\u0131 b\u00fcy\u00fck bir ivme kazanm\u0131\u015f durumda. \u00d6zellikle kendi y\u0131ld\u0131zlar\u0131n\u0131n ya\u015fanabilir b\u00f6lgesinde bulunan, D\u00fcnya benzeri gezegenler, bilim d\u00fcnyas\u0131n\u0131n en fazla odakland\u0131\u011f\u0131 hedefler aras\u0131nda yer al\u0131yor. Bug\u00fcne kadar y\u00fczlerce potansiyel aday ke\u015ffedilmi\u015f olsa da bu gezegenlerin \u00e7o\u011fu ya D\u00fcnya\u2019ya olduk\u00e7a uzak konumda ya da ya\u015fanabilirlik kriterleri a\u00e7\u0131s\u0131ndan yeterince g\u00fc\u00e7l\u00fc kan\u0131tlar sunam\u0131yordu. Ancak her iki konuda da aranan kriterli kar\u015f\u0131layan yeni \u00f6tegezegen bulunmu\u015f olabilir. Zira D\u00fcnya\u2019dan 18,2 \u0131\u015f\u0131k y\u0131l\u0131 uzakl\u0131kta<\/strong>, kendi y\u0131ld\u0131z\u0131n\u0131n ya\u015fanabilir b\u00f6lgesinde d\u00f6nen yeni bir \u201cs\u00fcper-D\u00fcnya\u201d ke\u015ffedildi. <\/figure>\n

Ya\u015fam Aray\u0131\u015f\u0131nda Bulunmu\u015f En G\u00fc\u00e7l\u00fc Adaylardan Biri<\/b><\/p>\n

Bilim insanlar\u0131, “GJ 251 c” ad\u0131 verilen bu \u00f6tegezegenin, \u015fimdiye dek ya\u015fam aray\u0131\u015f\u0131 a\u00e7\u0131s\u0131ndan tespit edilmi\u015f en g\u00fc\u00e7l\u00fc adaylardan biri olabilece\u011fini s\u00f6yl\u00fcyor.<\/strong> The Astronomical Journal\u2019da yay\u0131mlanan ke\u015ffe g\u00f6re GJ 251 c, D\u00fcnya\u2019n\u0131n yakla\u015f\u0131k d\u00f6rt kat\u0131 k\u00fctleye sahip ve \u0130kizler (Gemini) tak\u0131my\u0131ld\u0131z\u0131nda yer alan bir k\u0131rm\u0131z\u0131 c\u00fccenin etraf\u0131nda 54 g\u00fcnl\u00fck y\u00f6r\u00fcnge periyoduyla dola\u015f\u0131yor. Gezegen, y\u0131ld\u0131z\u0131na ne \u00e7ok yak\u0131n, ne de \u00e7ok uzak. Yani bilim insanlar\u0131n\u0131n \u201cGoldilocks Zone\u201d olarak tan\u0131mlad\u0131\u011f\u0131, ya\u015fama elverebilecek ideal mesafede konumlan\u0131yor. Ara\u015ft\u0131rman\u0131n ortak yazar\u0131 Profes\u00f6r Suvrath Mahadevan, \u201cBu t\u00fcr gezegenleri \u00f6zellikle ar\u0131yoruz, \u00e7\u00fcnk\u00fc ya\u015fam ihtimalini anlamak i\u00e7in elimizdeki en b\u00fcy\u00fck \u015fans onlar\u201d <\/strong>diyor.<\/p>\n

Ke\u015fif, yakla\u015f\u0131k 20 y\u0131ll\u0131k veri taramas\u0131 ve geli\u015fmi\u015f \u00f6l\u00e7\u00fcm tekniklerinin birle\u015fimiyle m\u00fcmk\u00fcn oldu. Ara\u015ft\u0131rma ekibi, GJ 251 c\u2019yi radyal h\u0131z y\u00f6ntemi<\/strong> kullanarak ortaya \u00e7\u0131kard\u0131. Bu y\u00f6ntemde, gezegenin k\u00fctle \u00e7ekimi nedeniyle y\u0131ld\u0131zda olu\u015fan son derece zay\u0131f yalpalama hareketleri tespit ediliyor. McDonald G\u00f6zlemevi\u2019ndeki Habitable-Zone Planet Finder (HPF) spektrograf\u0131 ve Arizona\u2019daki NEID spektrometresi taraf\u0131ndan sa\u011flanan veriler, y\u0131ld\u0131z y\u00fczeyindeki manyetik parazitler ve lekeler ay\u0131klanarak analiz edildi. Mahadevan\u2019a g\u00f6re bu s\u00fcre\u00e7 olduk\u00e7a zorlu: \u201cY\u0131ld\u0131z y\u00fczeyinin manyetik f\u0131rt\u0131nalar\u0131n\u0131, noktasal lekelerini ve di\u011fer g\u00fcr\u00fclt\u00fcleri eleyip i\u00e7inden gezegen sinyalini \u00e7ekip \u00e7\u0131karmaya \u00e7al\u0131\u015f\u0131yorsunuz. Bu, k\u00f6p\u00fcren bir kazan\u0131 kar\u0131\u015ft\u0131r\u0131rken i\u00e7indeki tek bir kabarc\u0131\u011f\u0131 tespit etmeye benziyor.\u201d<\/p>\n

Ara\u015ft\u0131rmac\u0131lar, sistemde daha \u00f6nce bilinen i\u00e7 gezegen GJ 251 b\u2019nin verilerini netle\u015ftirdikten sonra, daha g\u00fc\u00e7l\u00fc sinyale sahip olan d\u0131\u015ftaki GJ 251 c\u2019nin varl\u0131\u011f\u0131n\u0131 do\u011frulad\u0131. Yeni gezegenin k\u00fctlesi, y\u00f6r\u00fcngesi ve konumu, onu ya\u015fam aray\u0131\u015f\u0131 kapsam\u0131nda \u015fu anda bilinen en \u201ceri\u015filebilir\u201d hedeflerden biri h\u00e2line getiriyor.\u00a018,2 \u0131\u015f\u0131k y\u0131l\u0131 muazzam bir uzakl\u0131k olsa da uzay\u0131n enginli\u011fi i\u00e7inde g\u00f6rece k\u0131sa bir mesafe olarak g\u00f6r\u00fcl\u00fcyor.<\/p>\n

Her ne kadar mevcut teleskop teknolojisi GJ 251 c\u2019nin do\u011frudan g\u00f6r\u00fcnt\u00fclenmesine izin vermiyor olsa da bilim insanlar\u0131 \u015fimdiden sonraki a\u015famay\u0131 planl\u0131yor. Gezegenin hem D\u00fcnya\u2019ya g\u00f6rece yak\u0131n olu\u015fu hem de uygun y\u00f6r\u00fcnge konumu, \u00f6n\u00fcm\u00fczdeki 5\u201310 y\u0131l i\u00e7inde atmosferinde oksijen, metan veya di\u011fer biyolojik imzalar\u0131n aranabilece\u011fi anlam\u0131na geliyor. Ara\u015ft\u0131rmac\u0131lar, NASA\u2019n\u0131n 2040\u2019l\u0131 y\u0131llarda f\u0131rlatmay\u0131 planlad\u0131\u011f\u0131 Habitable Worlds Observatory<\/strong> ile bu gezegene do\u011frudan bakabilece\u011fimizi belirtiyor.<\/p>\n\n

Kaynak\u00a0 :\u00a0https:\/\/www.donanimhaber.com\/18-isik-yili-uzakta-yasama-elverisli-bir-otegezegen-bulundu–197744<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Son y\u0131llarda \u00f6tegezegen ara\u015ft\u0131rmalar\u0131 b\u00fcy\u00fck bir ivme kazanm\u0131\u015f durumda. \u00d6zellikle kendi y\u0131ld\u0131zlar\u0131n\u0131n ya\u015fanabilir b\u00f6lgesinde bulunan, D\u00fcnya benzeri gezegenler, bilim d\u00fcnyas\u0131n\u0131n en fazla odakland\u0131\u011f\u0131 hedefler aras\u0131nda yer al\u0131yor. Bug\u00fcne kadar …<\/p>\n","protected":false},"author":1,"featured_media":131265,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[227,152,4025,3199,765],"class_list":["post-131264","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-arastirma","tag-dunya","tag-gezegen","tag-yasam","tag-yildiz"],"_links":{"self":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/131264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/comments?post=131264"}],"version-history":[{"count":1,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/131264\/revisions"}],"predecessor-version":[{"id":131267,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/131264\/revisions\/131267"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media\/131265"}],"wp:attachment":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media?parent=131264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/categories?post=131264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/tags?post=131264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}