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 ...

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

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

Instead of searching the skies for radio signals, scientists suggest the first evidence of an extinct alien civilisation could be buried in lunar soil.

Pulverised technology from collapsed alien civilisations may lie scattered across the solar system, including on the Moon, a new study suggests. The likelihood of advanced aliens living at the same ...

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 ...

Once small enough, these technograins might gain a trip out of its host solar system by a solar wind that overcomes the star's gravity holding it back. These motes of dust are then free to roam the ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

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.

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