The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, ...

The area containing the clay-bearing mounds is geologically connected to Oxia Planum, which is where Rosalind Franklin will ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

Thousands of mysterious clay mounds found on Mars were formed by ancient water on the Red Planet's barren northern plains, ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Beautiful photos of the six planets aligned in the night sky have emerged online. Mars, Jupiter, Uranus, Neptune, Venus and ...

The United States will once again consider itself a growing nation, one that increases our wealth, expands our territory, ...

Images of Mars taken from orbit show thousands of mounds in a region sculpted by water billions of years ago. A robotic mission may investigate the area one day.

NASA's Curiosity rover unveils weather secrets on Mars, from high-altitude icy clouds to extensive dust storms, enriching ...

Chip Somodevilla/Pool Photo via AP Trump's enthusiasm for sending astronauts to Mars was shared by some ... his vision as making humanity a "multi-planet species," but such plans face resistance ...