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

Despite its small size, Mars seems to have a huge impact on the orbital cycles that govern Earth’s climate, especially those ...

Mars’s gravity shapes ice ages on Earth, new research finds - Red Planet’s gravity plays a significant role in climate cycles ...

The thin air of Mars has long been treated as a problem to be solved, a hostile mix of carbon dioxide and dust that stands ...

"The structures that we were able to identify in the images are clearly the mouth of a river into an ocean." The post ...

Advances in technology have reopened the debate over terraforming Mars, shifting it from an impossible dream to a long-term scientific and ethical question.

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