Billions of years ago, water flowed across Mars. Most scientists agree the red planet had rivers. But did those rivers flow ...

A fleet of ball-shaped rovers could drift across the Martian surface like tumbleweed, driven simply by the wind.

Because all earthly life shares a common origin, finding a second tree of life would forever change humanity’s understanding ...

The recent announcement that scientists have spotted what they believe to be evidence suggesting ancient life on Mars seemed ...

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation ...

A rare glimpse into the wintry conditions of the Mars north polar vortex has shown that temperatures inside the vortex are ...

On the Red Planet, aurorae glow green because the charged particles collide with oxygen atoms high above Mars. They may be bright enough that astronauts on Mars could spot them with their naked eye.

Phobos, the larger of Mar's two moons may hit the planet or break apart within the next 50 million years. It is currently ...

Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and astronauts.

Charalambous compared the pattern to shattered glass ... MORE: Is Trump and Musk's goal of sending humans to Mars feasible? On Earth, active plate tectonics continually stir the mantle, making its ...