Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick atmosphere, which kept it warm enough to support flowing water on its surface. So, ...

It's not entirely clear how neighboring planet Mars went from a presumably life-supporting planet to a place as dead as all others in the solar system. We do know, however, that whatever water and ...

The Red Planet has a bloody history. Newly examined data from NASA’s retired InSight lander suggest that there may be giant chunks of rocky material deep inside the mantle of Mars, which were lodged ...