In 1977, NASA’s Viking 2 orbiter pulled off a historic flyby of Deimos, capturing high-resolution images of the moon’s surface. Deimos turned out to have a much smoother, dustier surface than the ...

One asteroid impact may have carved Deimos, buried its surface in debris, and reshaped the entire Martian moon. An international team led by the University of Bern has found evidence that a single ...

Deimos, the smaller and outermost of Mars' two moons, is roughly oval in shape and has a deep depression at its south pole. Unlike its heavily scarred sister moon, Phobos, Deimos is covered by a loose ...

A massive crater on Mars’ moon Phobos may hide a dense region of compressed material that could reveal whether the moon is a captured asteroid or debris from an ancient impact on Mars. Japan’s ...

The bright yellow sulfur crystals discovered by NASA's Curiosity rover have puzzled scientists because sulfur on Mars is normally associated with mineral formations, not elemental deposits. In early ...

A robotic NASA rover on Mars has found evidence of repeated asteroid impacts on the Red Planet that could rival the asteroid that killed the dinosaurs on Earth. NASA’s Perseverance Mars rover ...

Add Yahoo as a preferred source to see more of our stories on Google. Chalk up another victory for "Conan the Bacterium"—a rugged germ that fresh research suggests could conquer the solar system.