Geologically, Mars is very reminiscent of the moon. But it also looks a lot like the Earth. It all depends on who you ask.

Mars is known as the 'Red Planet.' Learn about its reddish hue, caused by iron oxide, its position as the fourth planet from ...

Did you know that Mars at opposition is a special time when Earth and Mars are closest? This happens when Earth passes ...

Unlike the dunes on Earth which are constantly in motion, the kidney bean-shaped dunes on Mars appear surprisingly motionless ...

An exploding budget and an unraveling schedule spell disappointment for NASA's mission to learn more about Mars's history.

From windswept craters to frigid ice caps, explore Martian landscapes through the eyes of NASA’s orbiters, probes and rovers ...

A switch to Mars would impact programs such as the moon-focused Space Launch System, a multibillion-dollar rocket that ...

So I grabbed my camera, ran outside, and looked up just as Mars was supposed to emerge from the Moon's curved horizon. Seen ...

NASA unveils a groundbreaking approach to bring Martian rock samples back to Earth by 2026, introducing competition between ...

A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them ...

NASA announced Tuesday that it is exploring two options to move forward with its mission to return samples from Mars at a ...