Mars may have once possessed an ocean at least as large as Earth's Arctic Ocean, a new study suggests. Previous research ...

Small but mighty, the red planet — our celestial neighbor — has made Earth’s climate what it is today. Mars’ gravitational ...

A rover recently captured sounds of lightning crackling on Mars, over a decade after scientists uncovered the first evidence ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...

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

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 ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

This doesn’t mean Mars causes ice ages on its own. Orbital cycles are only part of the picture. Earth’s oceans, atmosphere, ...

Mars is famous for its volcanoes, canyons and ancient river valleys, but some of its most active geology happens in slow ...

Using images from cameras on Mars orbiters, an international research team has discovered structures on Mars that are very ...

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