\n<\/p>\n
Uzayl\u0131 ya\u015fam\u0131n\u0131 bulma aray\u0131\u015f\u0131nda g\u00f6zler genellikle evrenin en uzak noktalar\u0131na \u00e7evrilse de, NASA bilim insanlar\u0131 yeni bir \u00e7al\u0131\u015fmada daha yak\u0131n bir adrese dikkat \u00e7ekti: Mars ile J\u00fcpiter aras\u0131nda yer alan c\u00fcce gezegen Ceres.<\/p>\n
Ara\u015ft\u0131rmaya g\u00f6re Ceres, milyarlarca y\u0131l \u00f6nce mikrobiyal ya\u015fam\u0131 destekleyebilecek ko\u015fullara sahipti. \u00d6nceki bulgular, gezegenin y\u00fczeyinin alt\u0131nda tuzlu su g\u00f6lleri ve organik karbon molek\u00fclleri bulundu\u011funu g\u00f6stermi\u015fti. Ancak ya\u015fam i\u00e7in temel gereksinimlerden biri olan besin kayna\u011f\u0131na dair uzun s\u00fcre net kan\u0131t yoktu.<\/p>\n
Yeni bilgisayar sim\u00fclasyonlar\u0131 ise 2,5 ila 4 milyar y\u0131l \u00f6nce Ceres\u2019in i\u00e7 yap\u0131s\u0131nda radyoaktif elementlerin yaratt\u0131\u011f\u0131 s\u0131cakl\u0131k sayesinde, mikroskobik canl\u0131lar i\u00e7in i\u00e7in adeta bir \u201ckimyasal enerji ziyafeti\u201d olu\u015ftu\u011funu ortaya koydu.<\/p>\n
Bu d\u00f6nemde gezegenin \u00e7ekirde\u011fine yak\u0131n b\u00f6lgelerde suyun s\u0131cakl\u0131\u011f\u0131 270 dereceyi a\u015farak y\u00fczeye do\u011fru y\u00fckseldi, so\u011fuk suyla kar\u0131\u015ft\u0131 ve \u00e7\u00f6z\u00fcnm\u00fc\u015f minerallerle gazlar\u0131 da beraberinde ta\u015f\u0131d\u0131.<\/p>\n
Arizona State \u00dcniversitesi\u2019nden ara\u015ft\u0131rmac\u0131 Sam Courville, \u201cD\u00fcnyada yeralt\u0131ndan gelen s\u0131cak suyun okyanuslarla bulu\u015fmas\u0131 \u00e7o\u011fu zaman mikroplar i\u00e7in bir enerji kayna\u011f\u0131 oluyor. Ceres\u2019te de benzer bir s\u00fcre\u00e7 ya\u015fanm\u0131\u015f olabilir\u201d dedi.<\/p>\n
2018\u2019de NASA\u2019n\u0131n Dawn g\u00f6revi, Ceres\u2019in y\u00fczeyinde g\u00f6zlemlenen parlak tabakalar\u0131n, yeralt\u0131ndan s\u0131zan s\u0131v\u0131n\u0131n ard\u0131ndan geriye kalan tuzlardan olu\u015ftu\u011funu ortaya \u00e7\u0131karm\u0131\u015ft\u0131. Ancak g\u00fcn\u00fcm\u00fczde bu rezervuarlar\u0131n s\u0131cakl\u0131\u011f\u0131 yakla\u015f\u0131k eksi 63 derece seviyesinde, yani bilinen ya\u015fam bi\u00e7imleri i\u00e7in \u00e7ok so\u011fuk.<\/p>\n
Cambridge \u00dcniversitesi\u2019nden gezegen olu\u015fumu uzman\u0131 Prof. Helen Williams ise \u00e7al\u0131\u015fmay\u0131 \u201cheyecan verici\u201d olarak nitelendirerek, \u201cBu ara\u015ft\u0131rma, bir d\u00f6nem Ceres\u2019in y\u00fczeyinde su bulunabilece\u011fini g\u00f6steriyor. Su, ya\u015fam i\u00e7in gerekli elementleri ta\u015f\u0131r ve yo\u011funla\u015ft\u0131r\u0131r\u201d diye konu\u015ftu.<\/p>\n
Daily Mail’e g\u00f6re bilim insanlar\u0131, Ceres\u2019in ya\u015fam potansiyelinin art\u0131k ortadan kalkt\u0131\u011f\u0131n\u0131 belirtiyor. Zira ya\u015fam i\u00e7in gerekli s\u0131cakl\u0131\u011f\u0131 sa\u011flayan radyoaktif \u0131s\u0131 kayna\u011f\u0131 milyarlarca y\u0131l \u00f6nce t\u00fckenmi\u015f durumda.<\/p>\n
Ayr\u0131ca Ceres, Europa veya Enceladus gibi b\u00fcy\u00fck gezegenlerin g\u00fc\u00e7l\u00fc k\u00fctle \u00e7ekim etkisiyle \u0131s\u0131nmad\u0131\u011f\u0131 i\u00e7in art\u0131k tamamen donmu\u015f halde.<\/p>\n
Buna ra\u011fmen ara\u015ft\u0131rmac\u0131lar, bu bulgunun evrende ya\u015fam olas\u0131l\u0131\u011f\u0131na dair yeni bir kap\u0131 aralad\u0131\u011f\u0131n\u0131 vurguluyor. \u00c7al\u0131\u015fmaya g\u00f6re, kendi radyoaktif \u0131s\u0131s\u0131yla ge\u00e7ici olarak ya\u015fanabilir hale gelen k\u00fc\u00e7\u00fck g\u00f6k cisimleri san\u0131landan \u00e7ok daha yayg\u0131n olabilir.<\/p>\n<\/div>\n