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 ...

A recent photo from NASA's Curiosity rover gives an idea of what Mars would look like under skies that resemble our own on Earth. Take a look.

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.

Strange grooves, swirling valleys, and hidden ice far from Mars’s poles reveal a surprisingly recent ice age, as new ESA images expose how the Red Planet’s climate once dramatically shifted.

Mars has an active, electrically charged surface where dust storms and spinning dust devils regularly move and reshape the ...