<!--[if gte mso 9]><xml> <o:OfficeDocumentSettings> <o:AllowPNG /> </o:OfficeDocumentSettings> </xml><![endif]--> <p class="MsoNormal">ABD Ulusal Havacılık ve Uzay Dairesi'nin (NASA) Cassini uzay aracı, Satürn'ün uydusu Titan'da Mısır'daki Nil Nehri'ne benzeyen uzun bir nehrin görüntülerini gönderdi.</p> <p class="MsoNormal">Cassini radar ekibinde yer alan Brigham Young Üniversitesi'nden Doç. Dr. Jani Radebaugh, hidrokarbon dolu nehrin kaynağından Titan'ın kuzey kutbundaki büyük bir denize doğru 400 kilometre uzandığını söyledi.</p> <p class="MsoNormal">Radebaugh, Cassini'nin gönderdiği radar görüntüsünün şimdiye kadar Dünya dışındaki herhangi bir gök cisminde yer alan bir nehir sisteminden alınmış ilk yüksek çözünürlüklü görüntü olduğunu söyledi.</p> <p class="MsoNormal">Cassini uzay aracı, 2004'ten bu yana Güneş Sistemi'nin Jüpiter'den sonraki en büyük gezegeni Satürn ve uyduları ile ilgili çok önemli bilgiler gönderiyor.</p> <p class="MsoNormal">Uzay aracı, Satürn'ün 66 uydusundan Enceladus'un buz kaplı yüzeyinin altında büyük bir okyanus bulunduğu ile ilgili veriler bulmuştu.</p> <p class="MsoNormal">Görev süresi 2017'de sona eren Cassini, Satürn'ün atmosferi ile halkaları arasındaki dar aralığa yerleştirilecek.</p> <p class="MsoNormal">Satürn'ün atmosferine girerken büyük bir ısıya ulaşacak uzay aracı, atmosferde oksijen olmaması nedeniyle yanmayacak, ancak eriyip büyük basınç dolayısıyla imha olacak. 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