SpaceNASA GRAIL mission ends with twin moon smashes NASA has named the region that the Ebb and Flow probes hit as the Sally K. Ride impact site, after the late astronaut who was the first US woman in space News
SpaceSaturn's rings may double up as a moon factory A new model suggests Saturn's famous rings spawned the planet's moons. Could the mechanism explain the moons of Uranus, Neptune and even Earth? News