Chang'e 2, a Chinese spacecraft that was orbiting the Moon 18 months ago, has wowed space-watchers around the world by returning detailed images of asteroid 4179 Toutatis taken during a close-in, high-speed flyby.
Scientists associated with the Curiosity mission have two names for the towering peak inside Gale crater. SkyandTelescope.com readers told us which one they liked best.
If you can get yourself out of bed early, spectacular predawn vistas await your eyes, binoculars, and telescope over the next week.
Saturn's biggest moon already boasts a dense atmosphere, vast dune fields, and lakes full of hydrocarbons. Now scientists have evidence for a deep ocean beneath its icy crust.