Planetary geologists reply that these impressions usually result from pareidolia, the tendency for the brain to see familiar shapes in random patterns, a tendency Carl Sagan long ago called an ...

The barren red deserts of Mars might not be as lifeless as they seem. A growing number of researchers are pointing to strange ...

Ancient organisms may have left microscopic "biosignatures" on Mars. That's according to NASA scientists, who say a rock ...

The odds for life existing on other planets has just skyrocketed after a NASA rover unearthed new evidence on Mars. The odds ...

Learn why scientists are cautiously optimistic about the potential biosignatures found in the Sapphire Canyon rock sample.

Was there ever life on Mars? Planetary scientists think there could have been but there hasn’t been any direct evidence.

Prize: NASA could offer a prize—say $3 billion to the first company and $1 billion to a second company—for delivering ...

“This finding by Perseverance …is the closest we have ever come to discovering life on Mars,” said acting NASA administrator ...

Scientists believe intriguing leopard spots on a rock sampled by the Perseverance rover on Mars may have potentially been ...