The Apophis asteroid, once feared to hit Earth, is less than three years from making an unprecedented approach toward Earth.

When humans finally land on Mars, what should they do? A new report from the National Academies of Sciences, Engineering, and Medicine lays out the science objectives for a crewed Mars mission.

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 ...