NASA Declares End To Deep Impact Comet MissionA spacecraft that gave scientists their first peek into a comet's icy interior will explore no more, NASA said Friday.
NASA's 'Dawn' Spacecraft Orbits Massive AsteroidNASA says its Dawn spacecraft is preparing to study the massive asteroid Vesta after being captured into its orbit during the weekend.
Cost Of Next-Generation Mars Rover Soars To $2.5BNASA's next-generation rover to the surface of Mars needs more money -- again.
No Word From Stuck NASA Mars Rover SpiritThe Mars rover Spirit marks its seventh year on the red planet Monday. Not only is it stuck in a sand trap, it hasn't communicated with Earth since March.