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

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

A new NASA analysis concludes that it is "reasonable to hypothesize" that living things could have formed the odd organic ...

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

Samples taken from an ancient Mars rock may indicate that ancient life once existed on the Red Planet, according to a study ...

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

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

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 ...

NASA's Curiosity rover just found bizarre nodules on giant Martian "spiderwebs." Scientists are puzzled.

“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 ...

Searching for past or present life on Mars is the sole driving force behind every mission we send to the red planet, from orbiters to landers to rovers. However, there remains a concern in the ...

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 ...