Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

Even though the Red Planet's atmosphere is thin, wind is still one of Mars' most relentless sculptors.

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 ...

Mars, our planet of drive, desire, sex, and action, is moving into the complex climes of Aquarius. Mars will turn and burn in ...

To land on the right foot on the Red Planet, European engineers have been dropping a skeleton of the four-legged ExoMars ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...

When Mars moves through this Air sign, the message is clear: it’s time to take a stand for the greater good ...

For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...