Mars's atmosphere and climate are impacted by interactions with solar wind, a stream of plasma comprised of protons and electrons that flows from the sun's outermost atmosphere (corona), traveling at ...

We may have been wrong about how Mars got its characteristic red hue, a new study reveals. The Red Planet owes its ruddy complexion to rusted iron minerals, dispersed across billions of years by winds ...

The rusty world is full of mysteries—and some of the solar system's most extreme geology. Learn more about Earth's smaller, colder neighbor.

Add Yahoo as a preferred source to see more of our stories on Google. Every spring, an unusual phenomenon occurs on Mars: What look like little black spiders start swarming across the Red Planet’s ...

Humans have been exploring Mars since NASA's Viking 1 lander touched down on the red planet on July 20, 1976. Since that time, technology has improved drastically, enabling landers to do all sorts of ...

Billions of years ago, Mars’ Jezero Crater held a lake fed by rivers that could have carried minerals and maybe even organic matter. On Earth, places like that are teeming with microbial life. NOVA is ...