Curiosity Mars Rover

Mars' Gale Crater may not have been so wet after all, a new study suggests.

Since touching down on Aug. 5, 2012, Curiosity has been helping scientists better understand Mars' past habitability and how the planet has changed over time.

Scientists now seem to understand why the gas has been detected at ground level on Mars but not higher up in the air.

It might look like a postcard from Arizona, but this snapshot shows something much more exotic: the planet Mars, as seen by NASA's Curiosity rover.

NASA's Mars Reconnaissance Orbiter captured a dramatic image last month of Curiosity ascending Mont Mercou, a landform on the slopes of the Red Planet's 3.4-mile-high (5.5 kilometers) Mt. Sharp.

Mars did not dry up all at once, but fluctuated between dry spells and wetter times, a new study finds.

NASA's Mars rover Curiosity posed for a selfie in front of a beautiful Martian rock outcrop called "Mont Mercou" after probing the area for clues about the Red Planet's past.

NASA's Curiosity rover marked 3,000 Martian days, or "sols," on the Red Planet Tuesday (Jan. 12), a mere five weeks before NASA's Perseverance rover is scheduled to touch down.

NASA's Mars rover Curiosity has taken another selfie, just a few months before its six-wheeled cousin joins it on the Red Planet.

Venus isn't the only world beyond Earth where scientists have gotten a possible whiff of life.