Mars

For more than 40 years, missions throughout the solar system have sent back stunning images of our home planet

A blotch on the distant, football-shaped body could help reveal what the dwarf planet is made of

Scientists at the Monterey Bay Aquarium Research Institute sent an aquatic robot on a test run deep below the Pacific Ocean this summer

A tagalong to the Russian sample-return mission makes some researchers uncomfortable

It's the limited life span of batteries that keeps robots from being more widely available

Kepler's sensitivity to the orbit of a catalogued exoplanet bodes well for its ability to find Earth-like worlds

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The European Space Agency today released this high-resolution stereo image taken by the Mars Express orbiter of a region southeast of Ma'adim Vallis , one of the largest canyons on Mars (after Valles Marineris ).

New research reveals a better way to boost happiness than counting blessings--imagining that the good things never happened

The only scientist and field geologist ever to visit the moon offers some pointers to those who will one day visit Mars

Deimos is the smaller of Mars's two tiny, asymmetrical moons at less than 10 miles across , and it orbits farther from the Red Planet (14,500 miles) than its larger counterpart Phobos does.

Signs of repeated ice- and snow-melt in a mid-latitude gully may point to the most recent water activity on the Red Planet's surface