Mars might have its own defense mechanism against life from Earth, in a kind of reverse of "The War of the Worlds" scenario ...

Craters, craters, and yet more craters: this snapshot from ESA's Mars Express is packed full of them, each as fascinating as ...

NASA’s Curiosity rover has discovered tiny mineral nodules on Mars that suggest groundwater persisted on the planet much longer than previously believed, expanding the window during which microbial ...

The way this document is written suggests that when NASA scores bidders for the Mars Telecommunications Network, the addition ...

Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

A super-tough microbe may be able to survive being blasted from Mars into space—opening the door to interplanetary life ...