Dione (moon) - Wikipedia
Dione (/ daɪˈoʊni /), also designated Saturn IV, is the fourth-largest moon of Saturn. With a mean diameter of 1,123 km and a density of about 1.48 g/cm 3, Dione is composed of an icy mantle …
Dione From a Distance | NASA Jet Propulsion Laboratory (JPL)
2013年9月2日 · This image, taken by NASA's Cassini spacecraft, shows Dione's twin craters Romulus and Remus (just above-right of center), like their semi-divine namesakes, standing …
Saturn's Icy Moon Dione Has Oxygen Atmosphere | Space
2012年3月2日 · NASA's Cassini spacecraft has spotted a thin oxygen atmosphere on the icy Saturn moon Dione. Dione's atmosphere is wispy and is 5 trillion times less dense than the …
Dione - NASA Science
Dione is a small moon of 349 miles (562 km) in mean radius orbiting Saturn every 2.7 days at a distance of 234,500 miles (377,400 km), which is roughly the same distance that our Moon …
Dione: Saturn's Turned-Around Moon | Space
2018年8月24日 · Dione orbits around Saturn once every 2.7 Earth-days, at a distance of 234,000 miles (377,400 km), approximately the same distance from Earth to its moon. With its wispy …
Dione’s Cratered Surface - Science@NASA
2009年10月12日 · The Cassini spacecraft looks down on the cratered northern leading hemisphere of Dione, showing the moon's pockmarked surface. This view is centered on …
Dione, Face On - Science@NASA
2014年6月30日 · The surface of Dione (698 miles, or 1,123 kilometers across) is covered in craters, reminding us of the impacts that have shaped all of the worlds of our solar system. …
The Dione Atlas | NASA Jet Propulsion Laboratory (JPL)
2008年8月6日 · Presented here is a complete set of cartographic map sheets from a high-resolution Dione atlas, a project of the Cassini Imaging Team. The map sheets form a 15 …
Dione: Subocean Moon of Saturn | Images & Facts - GO …
Dione is one of the moons of the planet Saturn. Its surface is heavily cratered, has ice cliffs and a subsurface liquid ocean. For a listing of other moons, see Moons of the Planets.
Super high-resolution global view of Dione, plus rings
Super high-resolution global view of Dione, plus rings This super high-resolution view of Dione is a mosaic of 14 footprints, images taken through infrared, green, and ultraviolet filters …