One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

When Europe began planning for its first rover to land on Mars in the early 2000s, NASA was its partner of choice. Somehow, that alliance proved troubled. NASA withdrew from the ExoMars project in ...

The Mars rover found geological formations in Gale Crater showing how water percolated beneath the surface, and ...

Despite being known as the Red Planet, Mars shows off its swirling yellows, oranges and browns in a new satellite photo from ...

Curiosity finds strange boxwork ridges on Mars that hint at ancient underground water. Scientists are now drilling for ...

Scientists had hypothesized before the rover arrived that the peculiar ridges formed with the last trickles of water in the ...

Astronomers may have found the perfect Mars base location, and it's right next to a huge deposit of frozen water.

Snack maker Kellanova’s shares rose Thursday on news that its proposed merger with Mars Inc. had cleared U.S. regulators. The ...

European Commission officials set an Oct. 31 deadline to make a decision on the probe.