For a brief stretch on April 13, 2029, a giant space rock will slip closer to Earth than some of the satellites parked high ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system. Better known as Deinococcus radiodurans, this microbe is arguably the ...

Rocks from Mars have landed on Earth. Scientists have found them, meteorites with a chemical signature that could only have come from the Red Planet, scattered across Antarctica and other remote ...

Talk about your cosmic pileups. An asteroid similar to the one that flattened forests in Siberia in 1908 could plow into Mars sometime in the next few weeks. Researchers attached to NASA's Near-Earth ...

Somewhere in the Sahara Desert in 2011, a fragment of Mars was sitting on the sand, waiting. It had been there for roughly ...