... Small, icy, inner moon of Saturn, Enceladus is only about 500 kilometers in diameter. ... What if part of New York broke off and slammed into New Jersey? ... Are Saturn's auroras like Earth's? To help answer this question, the Hubble Space Telescope and the Cassini spacecraft monitored Saturn's South Pole simultaneously as Cassini closed in on the gas giant in January 2004. ... Oklo: Ancient African Nuclear Reactors . ... Saturns Moon Rhea from Cassini . ... The Rosette Nebula . ...