G\u00fcne\u015f sistemimizin en k\u00f6t\u00fc \u015f\u00f6hretli asteroitlerinden biri olan Pallas, Avrupa G\u00fcney G\u00f6zlemevi’nin \u00c7ok B\u00fcy\u00fck Teleskobu’ndaki SPHERE cihaz\u0131n\u0131 kullanan g\u00f6kbilimciler taraf\u0131ndan \u00e7arp\u0131c\u0131 detaylarla g\u00f6r\u00fcnt\u00fclendi. G\u00f6r\u00fcnt\u00fcler dikkat \u00e7ekici bir manzara ortaya koyuyor: Pallas, asteroid ku\u015fa\u011f\u0131ndaki en \u00e7ok kraterli nesnedir ve bu unvan\u0131 muhtemelen kom\u015fular\u0131yla say\u0131s\u0131z \u00e7arp\u0131\u015fma sonucu kazanm\u0131\u015ft\u0131r.<\/p>\n\n
“Pallas’\u0131n bu ilk ayr\u0131nt\u0131l\u0131 g\u00f6r\u00fcnt\u00fcleri, asteroidin \u015fiddetli bir ge\u00e7mi\u015fe sahip oldu\u011funu g\u00f6steriyor,” diyor MIT’de gezegen bilimci ve Nature Astronomy’de yay\u0131nlanan bir \u00e7al\u0131\u015fman\u0131n ortak yazar\u0131 Franck Marchis.<\/p>\n\n
Ku\u015faktaki \u00e7o\u011fu asteroit G\u00fcne\u015f’in etraf\u0131nda benzer bir y\u00f6r\u00fcnge izlerken, Pallas daha asi bir yakla\u015f\u0131m benimser. E\u011fik y\u00f6r\u00fcngesi, onu ku\u015fa\u011f\u0131n i\u00e7inden garip bir a\u00e7\u0131yla d\u00fc\u015f\u00fcrerek \u00e7arp\u0131\u015fma olas\u0131l\u0131\u011f\u0131n\u0131 art\u0131r\u0131r.<\/p>\n\n
MIT’de gezegen bilimci ve \u00e7al\u0131\u015fman\u0131n ortak yazar\u0131 Micha\u00ebl Marsset, “Pallas, asteroid ku\u015fa\u011f\u0131ndaki en b\u00fcy\u00fck iki nesne olan Ceres veya Vesta’dan iki veya \u00fc\u00e7 kat daha fazla \u00e7arp\u0131\u015fma ya\u015f\u0131yor,” diyor.<\/p>\n\n
S\u00fcrekli bombard\u0131man, Pallas’\u0131 a\u011f\u0131r bir \u015fekilde \u00e7ukurla\u015ft\u0131rarak ona “golf topu asteroit” lakab\u0131n\u0131 kazand\u0131rd\u0131. SPHERE taraf\u0131ndan \u00e7ekilen g\u00f6r\u00fcnt\u00fclerin analizi, kraterlerin asteroidin y\u00fczeyinin en az %10’unu olu\u015fturdu\u011funu g\u00f6sterdi.<\/p>\n\n
Pallas’\u0131n maruz kald\u0131\u011f\u0131 \u00e7arp\u0131\u015fmalar \u00f6zellikle \u015fiddetlidir. Bilgisayar sim\u00fclasyonlar\u0131, kraterlerden sorumlu \u00e7arpanlar\u0131n saatte 25.000 milden fazla h\u0131zla hareket etti\u011fini, yani asteroit ku\u015fa\u011f\u0131 \u00e7arp\u0131\u015fmalar\u0131 i\u00e7in tipik olandan neredeyse iki kat daha h\u0131zl\u0131 oldu\u011funu ortaya \u00e7\u0131kard\u0131.<\/p>\n\n
Pallas \u00fczerindeki \u00e7\u00f6k\u00fcnt\u00fclerin en az 36’s\u0131 en az 18 mil \u00e7ap\u0131ndad\u0131r ve bunlar aras\u0131nda 250 mil geni\u015fli\u011finde uzanan devasa bir krater de vard\u0131r. Bu krater muhtemelen 25 mile kadar geni\u015flikte bir nesneyle \u00e7arp\u0131\u015fman\u0131n sonucudur.<\/p>\n\n
Bu krateri yaratan \u00e7arp\u0131\u015fma, Pallas’\u0131 takip eden daha k\u00fc\u00e7\u00fck nesneler grubundan da sorumlu olabilir. Yakla\u015f\u0131k 1,7 milyar y\u0131l \u00f6nce asteroide \u00e7arpt\u0131ktan sonra, \u00e7arpan uzaya savrulan ve \u015fimdi liderlerini takip eden par\u00e7alara ayr\u0131lm\u0131\u015f olabilir.<\/p>\n\n
Marsset, “Art\u0131k ana ku\u015faktaki b\u00fcy\u00fck asteroitlerin y\u00fczeyini g\u00f6rebildi\u011fimiz i\u00e7in g\u00fcne\u015f sistemimizin tarihi hakk\u0131nda kurgusal bir kitaba eri\u015fimimiz var,” diyor. “Onu nas\u0131l okuyaca\u011f\u0131m\u0131z\u0131 \u00f6\u011freniyoruz ve Pallas da dahil her sayfa bizim i\u00e7in bir s\u00fcrpriz oluyor.”<\/p>\n\n
Pallas ve di\u011fer asteroitleri inceleyerek bilim insanlar\u0131, g\u00fcne\u015f sistemimizin \u015fiddetli ve kaotik ilk g\u00fcnleri hakk\u0131nda daha iyi bir anlay\u0131\u015f kazan\u0131yorlar. Bu g\u00f6k cisimleri, gezegenimizi \u015fekillendiren s\u00fcre\u00e7ler ve uzayda hala var olan potansiyel tehlikeler hakk\u0131nda ipu\u00e7lar\u0131 bar\u0131nd\u0131r\u0131yor.<\/p>","protected":false},"excerpt":{"rendered":"
Pallas: Asteroid Ku\u015fa\u011f\u0131n\u0131n En \u00c7ok Kraterli Nesnesi \u015eiddetli Bir Ge\u00e7mi\u015f Ortaya \u00c7\u0131kt\u0131 G\u00fcne\u015f sistemimizin en k\u00f6t\u00fc \u015f\u00f6hretli asteroitlerinden biri olan Pallas, Avrupa G\u00fcney G\u00f6zlemevi’nin \u00c7ok B\u00fcy\u00fck Teleskobu’ndaki SPHERE cihaz\u0131n\u0131 kullanan…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[6166,435,97,17017,17018,1173,473,17019,1232],"class_list":["post-12594","post","type-post","status-publish","format-standard","hentry","category-astronomy","tag-asteroid","tag-astronomy","tag-science","tag-crater","tag-golf-ball-asteroid","tag-solar-system","tag-nasa","tag-pallas","tag-space"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/12594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/comments?post=12594"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/12594\/revisions"}],"predecessor-version":[{"id":12595,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/posts\/12594\/revisions\/12595"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/media?parent=12594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/categories?post=12594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/tr\/wp-json\/wp\/v2\/tags?post=12594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}