Phoenix Mars Lander drills for ice.

Three teams suggest that a huge object slammed into Mars, giving the planet an unusually dualistic topography.

Scientists find an odd mineral that could offer clues to the solar system's origins.

Phoenix Lander gets first close-up of Martian soil.

A European astronomy group beamed a video of a Doritos sacrifice to the god of salsa at a possible alien race in a star system associated with the Big Dipper.

Instrument succeeds in capturing first soil sample, allowing Mars Phoenix Lander team to begin scientific studies.

New photos of collisions in one of Saturn’s rings provide a local lab for understanding the interactions that might shape young solar system formation.