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

"The configuration that we end up with within the solar system is definitely not something that is indeed common," Chen told ...

The essential ingredient for life, water, appeared on both planets around 4.4 billion years ago, new research indicates.

Was Mars just like Earth billions of years ago? A new study is making a very compelling case that our Martian neighbor may ...