The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too ...

Mars had an Arctic-sized ocean, and scientists are only now beginning to see the outline of it. For a long time, the planet ...

Scientists have known that Mars is rich in strange chemicals, especially chlorine-based compounds found by orbiters, rovers, ...

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

New climate modeling suggests that small lakes on ancient Mars could have stayed liquid for decades, even in a generally cold environment. Small lakes on early Mars may have stayed in liquid form for ...

A Mars spacecraft has now been AWOL for more than a month. But NASA hasn't given up hope of restoring contact with the MAVEN ...

A study by scientists at Penn State and NASA shows that intact biomolecules from dormant microbes break down much more slowly ...

Jezero Crater on Mars was once home to a lake, delta and rivers. See an animation of what it could have looked like when ...

New research suggests Mars was once a blue planet, as scientists identify river deltas and signs of a vast ancient ocean on ...

SpaceX is laying out a long-term vision for building a self-sustaining city on Mars. The plan depends on robotics, resource ...