A Martian selfie is giving Earthbound astronomers a look at environmental details on the red planet’s surface. But the selfie was not taken by an extraterrestrial. Rather, it was a manmade explorer.

Resembling a small pale puff, the twirling dust devil popped up 3 miles (5 kilometers) behind the rover during this month’s photo shoot. Released Wednesday, the selfie is a composite of 59 images ...

At the start of March, NASA’s Curiosity Mars rover began approaching an impressive rock formation that scientists dubbed “Mont Mercou,” a nickname taken from a mountain in France. Standing about 20 ...