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

Avi Loeb, a cosmologist who studied black holes and served as head of Harvard’s astronomy department until 2020, will lead a ...

Having considered more than 1,000 cases, this analyst of unidentified anomalous phenomena has honed a rational process for ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

This is the story of a mysterious finding in New Hampshire, pieced together from the incident summary sheet and official ...