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 geometric formations captured in NASA images as potential evidence of an ...

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

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

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

A rock found last year on the surface of Mars offered tantalising evidence that life once existed on the Red Planet. Now ...