The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

NASA’s missions to Mars are uncovering discoveries that scientists still struggle to fully explain. Strange formations, ...

For years, scientists have been intrigued by mysterious dark streaks running down the slopes of Martian cliffs and craters. These marks, called slope streaks and recurring slope lineae (RSLs), have ...

A new image shows a striking contrast between Mars' desert-like terrain against dark deposits of volcanic ash.

NASA's Curiosity rover has been exploring Mars for 14 years. See a new timelapse showing six years of wear and tear on its ...

NASA's Psyche spacecraft will get a boost from Mars on Friday, May 15, passing just 2,800 miles (4,500 kilometers) from the planet's surface at some 12,333 mph (19,848 kph). The spacecraft will ...

NASA scientists say the images provide far more than just a striking never-before-seen view of the Martian geography. Studying the features detailed in Odyssey's photos could help NASA prepare for ...

A new video released by NASA/JPL documents six years of Curiosity rover's wheels while driving on Mars.