For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

The size of a planet is a major factor that determines if life can gain a foothold on it, even if it's in the habitable zone ...

Scientists say new technologies have reopened the debate over whether Mars could someday be terraformed, turning a once ...

When scientists search for life beyond Earth, Mars usually gets most of the attention. But another world may offer an even ...

In the 21st century, the theories regarding the existence of aliens refuse to dial down. Now, the recently resurfaced NASA photo of Martian planet has gone viral on various social media ...

Did Viking 1 find evidence of life on Mars? Fifty years after the NASA lander touched down, the jury is still out.

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of expertS ...

Artificial intelligence could easily fall into the trap of identifying non-life as life on other worlds, claim two ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...