An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

On a clear summer day in 1947, businessman and civilian pilot Kenneth Arnold saw something strange in the sky.

Case in point: Scientists from Tokyo University and Hokkaido University in Japan stumbled across some mysterious jet-black ...

Along with other recent discoveries, the new finding from Perseverance boosts the case that Mars once hosted conditions that ...

There are "vast hidden magma systems" inside of Mars, scientists say – and it could have major implications for the search ...

Nasa's latest Mars discovery brings us closer to finding alien life. Perseverance has found deep deposits of complex carbon ...

NASA’s Perseverance rover has uncovered what may be the strongest evidence yet of ancient life on Mars. Inside a ...

The organic molecules could come from life or from ordinary chemistry — only samples returned to Earth can settle it.

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Researchers have looked at how particular microbes from Earth would fare in conditions like those of Mars, the moon, and the ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

Could microbes from Earth survive on other worlds? New research suggests that the answer may be yes. Ph.D. candidate Tommaso ...