Alien civilizations may have left traces. We just may not have been looking in the right place.

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a ...

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...

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

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

Researchers say a biocontainment facility on the Moon could be humanity's last line of defense against potential future alien ...

NASA briefings mention an apparent "alien star base" on the Moon, the latest trove of UFO files has revealed. Audio from a previously classified NASA meeting following the Apollo 16 mission in the ...

Newly declassified Pentagon UFO files have reignited debate over a possible alien presence on the Moon after a previously secret NASA Apollo 16 briefing surfaced online. The recording references a ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.