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

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

Bright white rocks spotted by NASA’s Perseverance rover are rewriting what we thought we knew about ancient Mars. These ...

Researchers used satellite data to calculate and simulate the sea level in a canyon, getting a glimpse of a huge ocean.

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

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

“The closer it is to the sun, the more a planet becomes dominated by the sun’s gravity,” Kane said. “Because Mars is farther ...

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

Spacecraft orbiting the Red Planet have helped researchers map out an ancient coastline that surrounded a large ocean billions of years ago ...

Mars today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Scientists have devised the most detailed map to date of the terrain hidden below the vast ice sheet blanketing Antarctica, ...

A broad view of Mars’s atmosphere. Credit: Andrea Luck / Wikimedia Commons / CC BY 2.0 An international team of scientists has discovered geological formations on Mars that suggest the planet once ...