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

Titan, Saturn's largest moon, is home to vast lakes and seas - not of water, but of liquid methane and ethane. In this video, ...

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

A newly released Apollo 16-era NASA audio recording in Pentagon UFO files has reignited Moon conspiracy theories after a participant casually mentioned a possible “alien star base” on the lunar far ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

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

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

Once small enough, these technograins might gain a trip out of its host solar system by a solar wind that overcomes 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 ...

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 ...

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