NASA scientists speculate seeping water may be causing some fascinating seasonal formations in the mountains of Mars.
Satellite shots provide a unique and insightful look at our world, and other worlds, like the Red Planet, too.
Photos from orbit show the plucky probe landed right where it was supposed to.
No, it's not Snoopy's long-lost cousin; it's a spaceship that hasn't been seen or heard from in more than 10 years. News to be released on Friday might change that.
A large comet swooped in close to Mars over the weekend. NASA's orbiters had to hide from the debris, but still captured some great shots.
A large boulder went for a tumble on Mars and is captured in a NASA photo, complete with the strange tracks it left behind.
Get a rare perspective on the Curiosity rover's travels across a distant planet with a fascinating image snapped by NASA's Mars orbiter.
The violent impact of a space rock on the Martian surface creates a compellingly beautiful image, but good thing no one's home up there.
NASA said today that its Mars Reconnaissance Orbiter found that the amount of the Red Planet's atmosphere depends on the tilt of its axis. And as the amount changes, so too could the stability of any liquid water on Mars.
Dust storms create swirling designs on the Martian surface.