The curious minds at What If explore what would happen if there is alien life on Jupiter's moon Europa.

A new policy paper proposes a lunar biocontainment facility for extraterrestrial samples. This secure lunar laboratory would ...

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 ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

A new study proposes examining Mars and other space samples on the Moon before bringing them to Earth, arguing it would ...

Scientists suggest the Moon could act as a quarantine checkpoint before samples from Mars are brought back to Earth.

English science fiction writer Arthur C. Clarke once said, "Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying." It's a line that has motivated ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow the search for potentially habitable planets beyond Earth. When you purchase ...

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a watery exoplanet with a red dwarf sun overhead. A new study suggests that the exoplanet GJ 3378b, which ...

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest in extraterrestrial theories and alien life.

(RNS) — Roughly a third of the way into Steven Spielberg’s new blockbuster film “Disclosure Day,” which focuses on the theoretical release of evidence documenting the existence of alien life, a ...