NASA's Curiosity rover found organic compounds on Mars that are often produced by living things on Earth. A new study concluded that non-biological processes alone cannot explain the presence of these ...

Scientists edge closer to answering Mars’ biggest question: Did life ever exist on the red planet? Here's the latest from two new finds.

Hints of ancient microbes in Martian rocks and a revived theory about our cosmic ancestry are forcing scientists to rethink where the story of life really began. Instead of a warm little pond on early ...

NASA's Perseverance robot, depicted here landing on the Martian dunes, used its cutting-edge cameras to image what could be the first evidence of life ever detected on Mars, opening the possibility ...

After drilling a rock sample from a spot on Mars nicknamed “Mary Anning,” NASA’s Curiosity rover took this selfie on October 25, 2020. Now, that sample has revealed organic molecules that have never ...

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.

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...