Sadece 505 kilometre geni\u015fli\u011finde olan Enceladus, Colorado eyaletinin i\u00e7ine s\u0131\u011fabilecek b\u00fcy\u00fckl\u00fckte. Lakin sahip oldu\u011fu s\u0131v\u0131 su, hidrotermal g\u00fc\u00e7 kayna\u011f\u0131 ve kimyasal bile\u015fenleriyle, d\u00fcnya d\u0131\u015f\u0131 \u00f6m\u00fcr i\u00e7in potansiyel bir yuva olarak g\u00f6r\u00fcl\u00fcyor.<\/p>\n
Yakla\u015f\u0131k 20 y\u0131l evvel NASA\u2019n\u0131n Cassini uzay arac\u0131, Enceladus\u2019un y\u00fczeyinin alt\u0131nda b\u00e2t\u0131n dev bir tuzlu okyanusun bulundu\u011funu ve uydunun g\u00fcney kutbuna yak\u0131n \u00e7atlaklardan mikroskobik \u201cbuz taneleri\u201d f\u0131\u015fk\u0131rtt\u0131\u011f\u0131n\u0131 ortaya \u00e7\u0131karm\u0131\u015ft\u0131. Sonraki ara\u015ft\u0131rmalarda bu tanelerde \u00f6m\u00fcr i\u00e7in gerekli alt\u0131 temel elementin be\u015fine (karbon, hidrojen, azot, oksijen ve fosfor \u2013 k\u00fck\u00fcrt hari\u00e7) rastland\u0131.<\/p>\n
Ancak bu bulgular\u0131n birden fazla, Sat\u00fcrn\u2019\u00fcn parlak ana halkalar\u0131n\u0131n d\u0131\u015f\u0131nda yer alan E halkas\u0131nda onlarca, hatta y\u00fczlerce y\u0131l evvel birikmi\u015f \u201ceski\u201d buz tanelerinden elde edilmi\u015fti. Bu da kelam konusu bile\u015fiklerin nitekim Enceladus\u2019tan m\u0131 yoksa uzayda halkay\u0131 etkileyen s\u00fcre\u00e7lerden mi kaynakland\u0131\u011f\u0131 sorusunu g\u00fcndeme getiriyordu.<\/p>\n
\u015eimdi astronomlar, Enceladus\u2019tan taze formda p\u00fcsk\u00fcrt\u00fclen buz tanelerinde organik molek\u00fcller tespit etti. Nature Astronomy mecmuas\u0131nda yay\u0131mlanan yeni ara\u015ft\u0131rma, bu molek\u00fcllerin azot ve oksijen i\u00e7eren yap\u0131lara sahip olabilece\u011fini g\u00f6steriyor.<\/p>\n
2008\u2019de Cassini, Enceladus\u2019un yeni p\u00fcsk\u00fcrtt\u00fc\u011f\u00fc buz tanelerinden olu\u015fan bir gayzerin i\u00e7inden ge\u00e7ti\u011finde, bu taneler uzay arac\u0131n\u0131n Kozmik Toz Analiz\u00f6r\u00fc\u2019ne \u00e7arpt\u0131.<\/p>\n
Bu \u00e7arpma saniyede 18 kilometre \u00fczere y\u00fcksek bir s\u00fcratte ger\u00e7ekle\u015fti\u011fi i\u00e7in su molek\u00fclleri k\u00fcmelenmedi ve grup \u201cdaha evvel b\u00e2t\u0131n kalm\u0131\u015f sinyalleri\u201d g\u00f6rebildi. Ara\u015ft\u0131rmac\u0131lar bu taze buz tanelerinin k\u00fctle spektrometrisi tahlilini yaparak, D\u00fcnya\u2019da karma\u015f\u0131k molek\u00fcllerin olu\u015fumunda rol oynayan bile\u015fiklere rastlad\u0131.<\/p>\n
Ara\u015ft\u0131rma tak\u0131m\u0131ndan Prof. Frank Postberg, \u201cBu molek\u00fcller, Cassini\u2019nin Sat\u00fcrn\u2019\u00fcn E halkas\u0131nda tespit etti\u011fi karma\u015f\u0131k organik molek\u00fcllerin uzayda uzun m\u00fcddet kalmalar\u0131n\u0131n bir eseri olmad\u0131\u011f\u0131n\u0131, Enceladus\u2019un okyanusunda zati mevcut olduklar\u0131n\u0131 kan\u0131tl\u0131yor\u201d dedi.<\/p>\n
Ara\u015ft\u0131rmac\u0131lardan Nozair Khawaja ise, bu molek\u00fcllerin biyolojik a\u00e7\u0131dan ehemmiyet kazanabilece\u011fi \u00e7e\u015fitli yollar bulundu\u011funu belirterek, \u201cBu durum uydunun ya\u015fanabilir olma ihtimalini art\u0131r\u0131yor\u201d dedi. Lakin Enceladus\u2019ta hayat bulunmamas\u0131n\u0131n bile ba\u015fl\u0131 ba\u015f\u0131na b\u00fcy\u00fck bir ke\u015fif olaca\u011f\u0131n\u0131, \u201cdo\u011fru \u015fartlar varken neden \u00f6mr\u00fcn olu\u015fmad\u0131\u011f\u0131\u201d \u00fczere de\u011ferli sorular do\u011furaca\u011f\u0131n\u0131 vurgulad\u0131.<\/p>\n
Avrupa Uzay Ajans\u0131 (ESA), Enceladus\u2019un g\u00fcney kutbuna ini\u015f yaparak daha fazla \u00f6rnek toplamak i\u00e7in bir uzay misyonu planl\u0131yor. Bu misyonun en erken 2040\u2019lar\u0131n ba\u015f\u0131nda ba\u015flamas\u0131 hedefleniyor.<\/p>\n","protected":false},"excerpt":{"rendered":"
Sat\u00fcrn\u2019\u00fcn buzla kapl\u0131 uydusu Enceladus\u2019un derinliklerinde gizli bir okyanus, y\u00fczeye ger\u00e7ek f\u0131\u015fk\u0131ran buz taneleriyle bilim d\u00fcnyas\u0131n\u0131 heyecanland\u0131r\u0131yor. Ara\u015ft\u0131rmac\u0131lar, bu taze buz par\u00e7ac\u0131klar\u0131nda \u00f6mr\u00fcn temelini olu\u015fturan organik molek\u00fcllerin \u201crahatl\u0131kla bulunabildi\u011fini\u201d ortaya koydu.<\/p>\n","protected":false},"author":1,"featured_media":85133,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[2093,242,4541,1396],"class_list":["post-85132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-teknoloji","tag-arastirma","tag-buz","tag-molekuller","tag-uzay"],"_links":{"self":[{"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/posts\/85132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/comments?post=85132"}],"version-history":[{"count":1,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/posts\/85132\/revisions"}],"predecessor-version":[{"id":85134,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/posts\/85132\/revisions\/85134"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/media\/85133"}],"wp:attachment":[{"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/media?parent=85132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/categories?post=85132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ikimisli.tr\/index.php\/wp-json\/wp\/v2\/tags?post=85132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}