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

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

Nearly 14 years ago, NASA’s Curiosity rover landed on Mars for a mission to explore the red planet and discover if it had an ...

Curiosity has been the subject of countless selfies and images taken from space, but has never been photographed from Mars' own orbit. The reconnaissance orbiter, which has been circling Mars since ...

Mars’s Coloe Fossae reveals a landscape shaped by ancient ice ages, with deep valleys, cratered terrain, and frozen debris flows preserved from a time when the planet’s climate dramatically shifted.

Mars has an active, electrically charged surface where dust storms and spinning dust devils regularly move and reshape the landscape. Mars is often portrayed as a dry, empty world, but the planet is ...

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