A gas strongly associated with life on Earth has been detected again in the Martian atmosphere, opening a new chapter in a decade-old mystery about the on-again, off-again appearance of methane on Mars.
NASA’s rover Curiosity has found organic compounds on Mars, the first definitive proof of building blocks for life on the Red Planet that also exist on Earth.
The motion of water on the bottom of an ancient Martian lake is frozen in time in a stunning new photo by NASA's Curiosity rover.
To account for a lake that lasted for millions of years means the Martian atmosphere would have had to be far thicker and loaded with water.
Here I am on Mars! Dozens of images were combined to create this selfie of Curiosity.
The mountain that NASA's Mars rover Curiosity is exploring appears to have once been a lake.
Follow the historic test flight of NASA Orion spacecraft in these photos.
The photos capture Mars passing below two objects known as the Lagoon and Trifid nebulas, both in the constellation Sagittarius.
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