Add Yahoo as a preferred source to see more of our stories on Google. A mysterious object found deep in the cosmos could soon have astronomers rethinking what they know about dark matter. That's ...

CAPE CANAVERAL, Fla. -- The jig may be up for an "asteroid" that's expected to get nabbed by Earth's gravity and become a mini moon next month. Instead of a cosmic rock, the newly discovered object ...

A space probe flying past Mars captured images of the red planet's small, mysterious moon. While on a flyby of Mars, Hera was able to use three of its imaging instruments to capture images of Deimos, ...

The Moon looks familiar, but it remains one of the strangest objects in our sky. From its size and orbit to its internal ...