The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too cold.

Olympus Mons is a giant volcano on Mars. It is the tallest mountain in space. It is almost three times higher than Mount ...

Mars, once a world with rivers, lakes, and oceans, tells a tragic story written in rock and ice. The loss of its magnetic field exposed it to relentless solar radiation, stripping away its atmosphere ...

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

Baby stars, teenage planets, and disappearing icebergs are all featured this week. Plus, a look back at a New Horizons image ...

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

Phobos, the oddly-shaped moon of Mars, has been captured in a series of stunning images gliding above the planet’s volcanic terrain and a dust storm in full rage. Taken by the European Space Agency’s ...

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 ...

ESA's first mission to another world, the Mars Express orbiter, began circling the Red Planet on June 2, 2003. Ever since, ...

Scientists have studied the driest regions of the Atacama Desert to understand whether life could exist on Mars ...

Close to the summit of an underwater mountain west of the Mid-Atlantic Ridge, a jagged landscape of towers rises from the ...

More than 3.5 billion years ago, the Earth was not the hospitable world we know today. The atmosphere lacked oxygen, the seas ...