\u0130nsanlar geceleri g\u00f6ky\u00fcz\u00fcnde s\u0131ra d\u0131\u015f\u0131 hareket eden 5 y\u0131ld\u0131z oldu\u011funu, bundan binlerce y\u0131l \u00f6nce fark etmi\u015flerdi. Bunlar\u0131 \u00f6tekilerden ay\u0131rmak i\u00e7in \u201cgezen y\u0131ld\u0131z\u201d anlam\u0131na gelen gezegen dediler. Bu 5 gezegen Merk\u00fcr, Ven\u00fcs, Mars, J\u00fcpiter ve Sat\u00fcrn\u2019d\u00fc. Bilim insanlar\u0131n\u0131n son 4 y\u00fczy\u0131ld\u0131r gezegenleri teleskopla g\u00f6zleme olana\u011f\u0131 oldu. 5 gezegen aras\u0131nda \u00f6zellikle Sat\u00fcrn bakanlar\u0131 \u00e7ok etkiledi. H\u00e2l\u00e2 da etkilemeyi s\u00fcrd\u00fcr\u00fcyor. \u00c7ap\u0131 120 bin km olan Sat\u00fcrn, G\u00fcne\u015f sisteminin 2. b\u00fcy\u00fck gezegeni. Merkezinde k\u00fc\u00e7\u00fck (yakla\u015f\u0131k D\u00fcnya b\u00fcy\u00fckl\u00fc\u011f\u00fcnde) bir kaya tabaka, onun \u00fczerinde kal\u0131n bir s\u0131v\u0131 tabaka ve d\u0131\u015fta da \u00e7ok kal\u0131n bir gaz tabaka bulundu\u011fu d\u00fc\u015f\u00fcn\u00fcl\u00fcyor. Ancak Sat\u00fcrn\u2019\u00fcn kimyasal yap\u0131s\u0131 h\u00e2l\u00e2 tam olarak \u00e7\u00f6z\u00fclebilmi\u015f de\u011fil.<\/p>\n
Bilim insanlar\u0131 bu g\u00fczel ve gizemli gezegene art\u0131k \u00e7ok daha yak\u0131ndan bakabilecek, onu ayr\u0131nt\u0131l\u0131 olarak inceleyebilecek. \u00c7\u00fcnk\u00fc bu aydan itibaren Cassini<\/em> adl\u0131 uzay arac\u0131 4 y\u0131ll\u0131k b\u00fcy\u00fck Sat\u00fcrn turuna ba\u015fl\u0131yor. Cassini, dev gezegenin \u00e7evresinde ataca\u011f\u0131 60 tur s\u0131ras\u0131nda onun atmosferini, iklim yap\u0131s\u0131n\u0131, manyetik alan\u0131n\u0131, halkalar\u0131n\u0131 ve 31 uydusundan yedisini inceleyecek. Bunun yan\u0131nda kal\u0131n bir atmosferle kapl\u0131 dev uydusu Titan\u2019a Huygens<\/em> adl\u0131 bir sonda (k\u00fc\u00e7\u00fck bir uzay arac\u0131) b\u0131rakacak. 1655 y\u0131l\u0131nda Hollandal\u0131 g\u00f6kbilimci Christiaan Huygens\u2019in ke\u015ffetti\u011fi Titan, G\u00fcne\u015f Sistemi\u2019nin 2. b\u00fcy\u00fck uydusu. 5150 km\u2019lik \u00e7ap\u0131yla yaln\u0131zca Ay\u2019dan de\u011fil, Merk\u00fcr\u2019den bile daha b\u00fcy\u00fck.<\/p>\n Bilim insanlar\u0131 Titan\u2019\u0131n atmosferinin, D\u00fcnya\u2019da ya\u015fam\u0131n ortaya \u00e7\u0131kt\u0131\u011f\u0131 d\u00f6nemlerdeki atmosfere benzedi\u011fini d\u00fc\u015f\u00fcn\u00fcyor. Ayr\u0131ca bu ilgin\u00e7 uyduda metan denizleri olabilece\u011fi, hatta basit ya\u015fam bi\u00e7imlerinin bile ortaya \u00e7\u0131km\u0131\u015f olabilece\u011fi tahmin ediliyor. Bilim insanlar\u0131n\u0131n bu s\u0131ra d\u0131\u015f\u0131 uyduya y\u00f6nelik y\u0131llard\u0131r biriken sorular\u0131na Huygens sondas\u0131 yan\u0131t vermeye \u00e7al\u0131\u015facak.<\/p>\n Cassini, D\u00fcnya ile Sat\u00fcrn aras\u0131ndaki yakla\u015f\u0131k 3 milyar kilometrelik yolu 6,5 y\u0131lda ald\u0131. Yakla\u015f\u0131k bir otob\u00fcs boyutlar\u0131ndaki Cassini, gelmi\u015f ge\u00e7mi\u015f en b\u00fcy\u00fck uzay arac\u0131 ve b\u00fcy\u00fck uzay ara\u00e7lar\u0131n\u0131n da sonuncusu. Ekim 1997\u2019de f\u0131rlat\u0131ld\u0131\u011f\u0131nda a\u011f\u0131rl\u0131\u011f\u0131 5,5 ton\u2019du. Bunun b\u00fcy\u00fck bir b\u00f6l\u00fcm\u00fc yak\u0131tt\u0131, ku\u015fkusuz. Cassini\u2019den sonra \u201cdaha h\u0131zl\u0131, daha ucuz ve daha becerikli\u201d uzay ara\u00e7lar\u0131 yap\u0131lmaya ba\u015fland\u0131.<\/p>\n Bilim insanlar\u0131n\u0131n elindeki en g\u00fczel Sat\u00fcrn g\u00f6r\u00fcnt\u00fclerini 1980 ve 1981 y\u0131llar\u0131nda gezegenin yak\u0131n\u0131ndan ge\u00e7en Voyager 1 ve Voyager 2 uzay ara\u00e7lar\u0131 g\u00f6ndermi\u015fti. Cassini\u2019de \u00e7ok duyarl\u0131 2 kamera bulunuyor. Bunlardan biri 1,5 km \u00f6teden madeni bir 50 bin liral\u0131\u011f\u0131n foto\u011fraf\u0131n\u0131 \u00e7ok net \u00e7ekebilecek beceride. Bilim insanlar\u0131 b\u00fcy\u00fck uzay ara\u00e7lar\u0131n\u0131n sonuncusu Cassini\u2019ye b\u00fcy\u00fck umut ba\u011flam\u0131\u015f durumdalar. \u00c7\u00fcnk\u00fc onun sayesinde yaln\u0131zca bu dev gezegene ve uydular\u0131na ili\u015fkin de\u011fil, G\u00fcne\u015f Sistemi\u2019nin yap\u0131s\u0131 ve olu\u015fumuna ili\u015fkin de \u00e7ok \u015fey \u00f6\u011frenilecek.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" \u0130nsanlar geceleri g\u00f6ky\u00fcz\u00fcnde s\u0131ra d\u0131\u015f\u0131 hareket eden 5 y\u0131ld\u0131z oldu\u011funu, bundan binlerce y\u0131l \u00f6nce fark etmi\u015flerdi. Bunlar\u0131 \u00f6tekilerden ay\u0131rmak i\u00e7in \u201cgezen y\u0131ld\u0131z\u201d anlam\u0131na gelen gezegen dediler. Bu 5 gezegen Merk\u00fcr, Ven\u00fcs, Mars, J\u00fcpiter ve Sat\u00fcrn\u2019d\u00fc. Bilim insanlar\u0131n\u0131n son 4 y\u00fczy\u0131ld\u0131r gezegenleri teleskopla g\u00f6zleme olana\u011f\u0131 oldu. 5 gezegen aras\u0131nda \u00f6zellikle Sat\u00fcrn bakanlar\u0131 \u00e7ok etkiledi. H\u00e2l\u00e2 da […]<\/p>\n","protected":false},"author":11,"featured_media":9063,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43,30,19],"tags":[248,293,297],"class_list":["post-9062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-5-sayi","category-astronomi","category-bilim-gundemi","tag-astronomi","tag-gezegenler","tag-gunes-sistemi"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/9062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/comments?post=9062"}],"version-history":[{"count":0,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/posts\/9062\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media\/9063"}],"wp:attachment":[{"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/media?parent=9062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/categories?post=9062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bilimvegelecek.com.tr\/index.php\/wp-json\/wp\/v2\/tags?post=9062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}