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Satürn'ün yörüngesindeki 63. uyduya şimdilik Peggy adı verildi.</p> <p class="MsoNormal">Peggy'nin doğumu, Satürn'ün en dıştaki halkasından Cassini uzay aracının çektiği siyah-beyaz görüntülerden izlendi. <br /> <br /> Görüntüleri izleyen bilim adamları, buz parçacıklarından oluşan halkanın ucunda çıkıntıya benzeyen bir gök cismi keşfetti. <br /> <br /> Yeni doğan uydunun yaklaşık bir kilometre çapında ve tamamen buzdan olduğu belirlendi.</p> <p class="MsoNormal">Keşif, "Icarus" dergisinde yayımlandı.</p> <p class="MsoNormal"><b style="mso-bidi-font-weight:normal">BİLİM İNSANLARI, PEGGY'NİN AKIBETİNDEN ENDİŞELİ<br /> <br /> <img width="320" height="237" align="middle" alt="" src="/images/upload/1397738658_peggy.jpg" /><br /> </b></p> <p class="MsoNormal">Güneş Sistemi'nin Jüpiter'den sonra ikinci en büyük gezegeni olan Satürn'ün çevresinde yüzde 90'u saf buzdan oluşan halkalar bulunuyor. Bu halkalarda doğan uydular, zaman içinde gezegenin yörüngesinde daha uzak konumlara yerleşiyor.</p> <p class="MsoNormal">Bilim insanları, minik Peggy'nin akıbetinden endişeli. Yeni doğan uydu, halkalar içinde kalması durumunda buz kitleleri ile çarpışıp parçalanma riski ile karşı karşıya gelecek. Peggy, halkaların dışına çıkabilmeyi başarsa bile bu kez de daha büyük kardeşleriyle çarpışması söz konusu olabilecek.</p> <p class="MsoNormal">Çıplak gözle izlenebildiği için tarih boyunca insanoğlunun dikkatini çeken Satürn, hidrojen ve helyumdan oluşuyor. Dünya'dan 1,5 milyar kilometre uzaklıktaki Satürn'ün yüzeyindeki sıcaklığın -200 derece olduğu sanılıyor. 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