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

Life's capacity to survive in simulated lunar and Martian soils has been explored in two papers published in Scientific ...

Chalk up another victory for “Conan the Bacterium”—a rugged germ that fresh research suggests could conquer the solar system.

Humans could have come from Mars, scientists have said. A study by Johns Hopkins University has found that alien microbes ...

Tests conducted with tardigrades suggest that there is something in Martian dirt that dramatically reduces biological ...

Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find.

A new study shows how simulated Mars dust affects tardigrades, offering insight into space farming and contamination risks.

"Life might actually survive being ejected from one planet and moving to another." ...

For decades, scientists have imagined Martian life as something that might look faintly familiar, perhaps microbes not so different from those that once thrived in Earth’s ancient seas. A new wave of ...

Tiny life forms tucked into debris from an asteroid hit could catapult to other planets—including Earth—and survive, a new ...

“This finding by Perseverance …is the closest we have ever come to discovering life on Mars,” said acting NASA administrator Sean Duffy in a statement. “The identification of a potential biosignature ...

Spiderweb-shaped rock patterns on Mars may rewrite the timeline of when water disappeared from the Red Planet.