Beware: It's not going to be easy to choose one favorite photo to win the Wildlife Photographer of the Year People’s Choice ...

How did the moons of Mars, Phobos and Deimos, form and evolve orbiting the Red Planet? This is what a recent study published ...

Smoke rising from the rubble of multistory buildings in Beirut. Rockets streaking over the blackened hills of northern Israel ...

Lucy may be the best-known prehuman fossil in the world. But other famous fossils have given us important insight into our ...

"Maybe we didn't understand the universe as well as we thought," said astrophysicist Justus Gibson of CU Boulder.

The Sombrero galaxy, named for its resemblance to the Mexican hat, is about 30 million light-years from Earth.

Computer simulations suggest that Mars' puzzling moons, Phobos and Deimos, may have been formed from debris created when a ...

E very year the TIME photo department sits down to curate the strongest images that crossed our path over the previous 12 ...

To uncover the truth about the origins of these moons, scientists are looking forward to the Mars Moons eXploration (MMX) ...