{"id":149033,"date":"2025-12-03T18:24:46","date_gmt":"2025-12-03T18:24:46","guid":{"rendered":"https:\/\/kamucalisani.net\/?p=149033"},"modified":"2025-12-03T18:24:46","modified_gmt":"2025-12-03T18:24:46","slug":"nasanin-2025-yilina-damga-vuran-cigir-acan-kesifleri","status":"publish","type":"post","link":"https:\/\/kamucalisani.net\/index.php\/2025\/12\/03\/nasanin-2025-yilina-damga-vuran-cigir-acan-kesifleri\/","title":{"rendered":"NASA\u2019n\u0131n 2025 y\u0131l\u0131na damga vuran \u00e7\u0131\u011f\u0131r a\u00e7an ke\u015fifleri"},"content":{"rendered":"

<\/span> 2025 y\u0131l\u0131 NASA<\/strong> i\u00e7in belirsizliklerle dolu bir y\u0131l olarak kay\u0131tlara ge\u00e7ti. Kurum, kitlesel i\u015ften \u00e7\u0131karmalar, b\u00fct\u00e7e kesintileri ve liderlik de\u011fi\u015fimleriyle m\u00fccadele ederken t\u00fcm zorluklara ra\u011fmen bilim d\u00fcnyas\u0131n\u0131 sarsan ke\u015fifler ger\u00e7ekle\u015ftirmeyi ba\u015fard\u0131. \u0130\u015fte 2025\u2019in \u00f6ne \u00e7\u0131kan yedi \u00e7\u0131\u011f\u0131r a\u00e7an NASA ke\u015ffi. <\/figure>\n

Mars\u2019ta potansiyel biyosinyal<\/b><\/p>\n

NASA\u2019n\u0131n Perseverance<\/strong> arac\u0131 Temmuz 2024\u2019te Mars\u2019\u0131n Jezero Krateri\u2019nde s\u0131ra d\u0131\u015f\u0131 bir kaya ke\u015ffetti. Y\u00fczeyinde ha\u015fha\u015f tohumu ve leopar desenini and\u0131ran lekeler bulunan bu kaya, bilim insanlar\u0131n\u0131n dikkatini \u00e7ekti. Perseverance, Chevaya Falls<\/strong> ad\u0131 verilen bu kayan\u0131n \u00e7ekirde\u011fini ald\u0131 ve y\u00fczey kimyas\u0131n\u0131 inceledi.<\/p>\n

<\/span> Kayan\u0131n organik karbon, k\u00fck\u00fcrt, oksitlenmi\u015f demir (pas) ve fosfor gibi ya\u015fam i\u00e7in temel bile\u015fenleri bar\u0131nd\u0131rd\u0131\u011f\u0131 ayr\u0131ca D\u00fcnya\u2019daki mikrobiyal metabolizma ile ili\u015fkili minerallere sahip oldu\u011fu belirlendi. Bulgular, Nature dergisinde yay\u0131mlan\u0131rken Chevaya Falls\u2019un Mars\u2019ta ge\u00e7mi\u015f ya\u015fam\u0131n en g\u00fc\u00e7l\u00fc i\u015faretlerinden biri<\/strong> olabilece\u011fi belirtiliyor. Kesin do\u011frulama i\u00e7in \u00e7ekirde\u011fin D\u00fcnya\u2019ya getirilip analiz edilmesi gerekiyor. Ancak Mars Sample Return g\u00f6revi \u015fu an ask\u0131da. <\/figure>\n

3I\/ATLAS<\/b><\/p>\n

Astronomlar\u0131n \u00e7o\u011funlu\u011fu, g\u00f6zlemledikleri asteroit ve kuyrukluy\u0131ld\u0131zlar\u0131n G\u00fcne\u015f Sistemi\u2019ne ait oldu\u011funu biliyor. Ancak Haziran ay\u0131nda NASA destekli ATLAS sistemi, galaksimizin uzak bir k\u00f6\u015fesinden gelen \u00fc\u00e7\u00fcnc\u00fc bir y\u0131ld\u0131zlararas\u0131 nesneyi tespit etti. 3I\/ATLAS<\/strong> ad\u0131 verilen bu kuyrukluy\u0131ld\u0131z, ba\u015fka bir y\u0131ld\u0131z sisteminden geliyordu. Ara\u015ft\u0131rmac\u0131lar, nesne g\u00f6zden kaybolmadan \u00f6nce olabildi\u011fince \u00e7ok veri toplamak i\u00e7in k\u00fcresel \u00e7apta bir yar\u0131\u015f ba\u015flatt\u0131.<\/p>\n

<\/span> \u0130lk analizler, 3I\/ATLAS\u2019\u0131n ola\u011fan\u00fcst\u00fc y\u00fcksek karbon dioksit i\u00e7eri\u011fi ve ya\u015fl\u0131 yap\u0131s\u0131 ile dikkat \u00e7ekti\u011fini ortaya koydu. NASA, birden fazla uzay arac\u0131yla kuyrukluy\u0131ld\u0131z\u0131 g\u00f6zlemleyerek kapsaml\u0131 veri ve g\u00f6r\u00fcnt\u00fcler toplad\u0131. Bu bilgiler, 3I\/ATLAS G\u00fcne\u015f Sistemi\u2019nden ayr\u0131ld\u0131ktan sonra da astronomlar i\u00e7in \u00f6nemli bir kaynak olmaya devam edecek. <\/figure>\n

Betelgeuse\u2019un k\u00fc\u00e7\u00fck y\u0131ld\u0131z arkada\u015f\u0131<\/b><\/p>\n

<\/span> Orion tak\u0131my\u0131ld\u0131z\u0131ndaki k\u0131rm\u0131z\u0131 s\u00fcperdev Betelgeuse<\/strong>, y\u0131llard\u0131r astronomlar\u0131 \u015fa\u015f\u0131rtan garip \u0131\u015f\u0131k desenleri sergiliyor. 2024\u2019te Betelgeuse\u2019un bu tuhaf davran\u0131\u015f\u0131 a\u00e7\u0131klayabilecek k\u00fc\u00e7\u00fck bir y\u0131ld\u0131z arkada\u015f\u0131 olabilece\u011fi \u00f6ne s\u00fcr\u00fclm\u00fc\u015ft\u00fc. Bu y\u0131l, NASA Ames Ara\u015ft\u0131rma Merkezi\u2019nden k\u0131demli ara\u015ft\u0131rmac\u0131 Steve B. Howell liderli\u011findeki ekip, bu hipotezi do\u011frulad\u0131. BetelBuddy<\/strong> ad\u0131 verilen k\u00fc\u00e7\u00fck ve s\u00f6n\u00fck y\u0131ld\u0131z, Hawaii\u2019deki Gemini North teleskopuyla y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc olarak foto\u011frafland\u0131. <\/figure>\n

Bu ke\u015fif sayesinde Betelgeuse\u2019un yakla\u015f\u0131k 400 g\u00fcnl\u00fck bir d\u00f6ng\u00fcde de\u011fi\u015fen parlakl\u0131\u011f\u0131 ve 6 y\u0131ll\u0131k ikincil bir periyodu art\u0131k anla\u015f\u0131labiliyor. De\u011fi\u015fken y\u0131ld\u0131zlar yayg\u0131n olsa da, Betelgeuse\u2019un uzun s\u00fcreli kararma evresi y\u00fczy\u0131llard\u0131r a\u00e7\u0131klanam\u0131yordu.<\/p>\n

Uran\u00fcs\u2019\u00fcn gizli uydusu<\/b><\/p>\n

<\/span> NASA\u2019n\u0131n James Webb Uzay Teleskobu, bu y\u0131l Uran\u00fcs\u2019\u00fcn<\/strong> y\u00f6r\u00fcngesinde daha \u00f6nce fark edilmeyen bir uydu ke\u015ffetti. S\/2025 U1<\/strong> ad\u0131 verilen bu k\u00fc\u00e7\u00fck uydu, yakla\u015f\u0131k 40 y\u0131l \u00f6nce Voyager 2 taraf\u0131ndan ger\u00e7ekle\u015ftirilen Uran\u00fcs ge\u00e7i\u015finde fark edilmemi\u015fti. Webb\u2019in g\u00fc\u00e7l\u00fc Yak\u0131n K\u0131z\u0131l\u00f6tesi Kameras\u0131 (NIRCam) sayesinde \u015eubat ay\u0131nda ke\u015ffedildi. <\/figure>\n

Astronomlar, uydunun Uran\u00fcs\u2019\u00fcn i\u00e7 halkalar\u0131n\u0131n kenar\u0131nda, ekvatoryal d\u00fczlemde yakla\u015f\u0131k 56.000 kilometre uzakl\u0131kta bulundu\u011funu belirledi. Yakla\u015f\u0131k 10 kilometre \u00e7ap\u0131nda olan bu k\u00fc\u00e7\u00fck uydu, Uran\u00fcs\u2019\u00fcn daha pek \u00e7ok gizli uydusu olabilece\u011fini g\u00f6steriyor.<\/p>\n

En a\u011f\u0131r kara delik<\/b><\/p>\n

<\/span> Bu y\u0131l \u00f6ne \u00e7\u0131kan ke\u015fiflerden biri, tespit edilen en a\u011f\u0131r kara delik<\/strong> oldu. Hubble Uzay Teleskobu ve Avrupa G\u00fcney G\u00f6zlemevi\u2019nin Very Large Telescope<\/strong>\u2019u (VLT) verilerini kullanan astronomlar, tahmini k\u00fctlesi G\u00fcne\u015f\u2019in 36 milyar kat\u0131 olan dev bir kara deli\u011fi ke\u015ffetti. Bu kozmik dev, D\u00fcnya\u2019dan 5 milyar \u0131\u015f\u0131k y\u0131l\u0131 uzakl\u0131ktaki Cosmic Horseshoe adl\u0131 s\u00fcperdev galaksinin merkezinde bulunuyor. Galaksinin devasa k\u00fctlesi, yak\u0131n\u0131ndaki \u0131\u015f\u0131\u011f\u0131 b\u00fckerek bir Einstein halkas\u0131 olu\u015fturuyor. Bu do\u011fal mercek olay\u0131, kara deli\u011fin tespit edilmesini m\u00fcmk\u00fcn k\u0131ld\u0131. <\/figure>\n

\u00c7al\u0131\u015fma, kara deliklerin tespitinde klasik y\u00f6ntemlerin yetersiz kald\u0131\u011f\u0131 durumlarda, k\u00fctle\u00e7ekimsel mercekleme ile teleskop verilerinin birle\u015ftirilmesinin ne kadar etkili oldu\u011funu g\u00f6sterdi.<\/p>\n

Asteroitten al\u0131nan \u00f6rnekler<\/b><\/p>\n

<\/span> Asteroit Bennu<\/strong>\u2019dan al\u0131nan \u00f6rnekler de bu y\u0131l bilim d\u00fcnyas\u0131n\u0131 heyecanland\u0131rd\u0131. NASA\u2019n\u0131n OSIRIS-REx<\/strong> g\u00f6revi, 2023\u2019te D\u00fcnya\u2019ya d\u00f6nen Bennu \u00f6rneklerinde ya\u015fam\u0131n yap\u0131 ta\u015flar\u0131n\u0131 ta\u015f\u0131yan bile\u015fenler buldu. Nature ve Nature Astronomy dergilerinde yay\u0131mlanan ara\u015ft\u0131rmalarda, \u00f6rneklerde protein yap\u0131 ta\u015f\u0131 amino asitleri, RNA ve DNA\u2019y\u0131 olu\u015fturan be\u015f n\u00fckleobaz ve tuzlu \u00e7\u00f6zeltiler saptand\u0131. <\/figure>\n

Daha etkileyici olan ise \u00f6rneklerde \u015fekerler de bulunmas\u0131 oldu. B\u00f6ylece Bennu\u2019nun ya\u015fam i\u00e7in gerekli t\u00fcm temel bile\u015fenleri ta\u015f\u0131d\u0131\u011f\u0131<\/strong> do\u011fruland\u0131. Bu, Bennu gibi asteroitlerin, ya\u015fam\u0131n temel bile\u015fenlerini D\u00fcnya’ya ta\u015f\u0131d\u0131\u011f\u0131n\u0131 g\u00fc\u00e7l\u00fc bir \u015fekilde ortaya koyuyor. \u0130lgin\u00e7 bir \u015fekilde, \u00f6rneklerde eksik olan tek \u015feker, DNA’n\u0131n temel bile\u015feni olan deoksiribozdu. Bu, ya\u015fam\u0131n k\u00f6keni ile ilgili RNA d\u00fcnyas\u0131 hipotezini destekliyor. Bu hipotez, D\u00fcnya’n\u0131n en eski ya\u015fam formlar\u0131n\u0131n genetik bilgi i\u00e7eren ve \u00e7o\u011falabilen RNA molek\u00fcllerinden olu\u015ftu\u011funu \u00f6ne s\u00fcr\u00fcyor.<\/p>\n

G\u00fcne\u015f ilk kez bu kadar yak\u0131ndan g\u00f6r\u00fcld\u00fc<\/b><\/p>\n

Bir di\u011fer \u00f6nemli geli\u015fme ise G\u00fcne\u015f<\/strong>\u2019in bug\u00fcne kadar \u00e7ekilen en yak\u0131n g\u00f6r\u00fcnt\u00fclerinin elde edilmesi oldu. NASA\u2019n\u0131n Parker Solar Probe<\/strong> uzay arac\u0131, G\u00fcne\u015f\u2019e yaln\u0131zca 6,12 milyon kilometre<\/strong> yakla\u015farak tarih yazd\u0131. Temmuz ay\u0131nda yay\u0131mlanan foto\u011fraflar ve videolar, G\u00fcne\u015f\u2019in koronas\u0131n\u0131 benzeri g\u00f6r\u00fclmemi\u015f ayr\u0131nt\u0131da g\u00f6steriyor. WISPR (Wide-Field Imager for Solar Probe) kameras\u0131yla elde edilen bu y\u00fcksek \u00e7\u00f6z\u00fcn\u00fcrl\u00fckl\u00fc veriler, koronal k\u00fctle p\u00fcsk\u00fcrmeleri ve g\u00fc\u00e7l\u00fc g\u00fcne\u015f r\u00fczgarlar\u0131n\u0131 detayl\u0131 bi\u00e7imde g\u00f6zler \u00f6n\u00fcne seriyor. Bu veriler D\u00fcnya\u2019daki manyetosferi etkileyebilecek jeomanyetik f\u0131rt\u0131nalar\u0131n tahminini ve \u00f6nlenmesini geli\u015ftirmek a\u00e7\u0131s\u0131ndan kritik \u00f6neme sahip.<\/p>\n\n

Kaynak\u00a0 :\u00a0https:\/\/www.donanimhaber.com\/nasa-nin-2025-yilina-damga-vuran-cigir-acan-kesifleri–199290<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

2025 y\u0131l\u0131 NASA i\u00e7in belirsizliklerle dolu bir y\u0131l olarak kay\u0131tlara ge\u00e7ti. Kurum, kitlesel i\u015ften \u00e7\u0131karmalar, b\u00fct\u00e7e kesintileri ve liderlik de\u011fi\u015fimleriyle m\u00fccadele ederken t\u00fcm zorluklara ra\u011fmen bilim d\u00fcnyas\u0131n\u0131 sarsan ke\u015fifler ger\u00e7ekle\u015ftirmeyi …<\/p>\n","protected":false},"author":1,"featured_media":149034,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[459,1380,1023,728,3199],"class_list":["post-149033","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-gunes","tag-nasa","tag-ornekler","tag-veri","tag-yasam"],"_links":{"self":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/149033","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=149033"}],"version-history":[{"count":0,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/posts\/149033\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media\/149034"}],"wp:attachment":[{"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/media?parent=149033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/categories?post=149033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kamucalisani.net\/index.php\/wp-json\/wp\/v2\/tags?post=149033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}