Seth Shostak / SETI Institute A newly spotted interstellar visitor just got an unusually close listen from California ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Scientists have discovered a new species of flatworm, the deepest free-living one ever recorded, in the Pacific Ocean's Kuril ...

A polarizing Harvard University astronomer known for splashy theories about alien visits has been tapped by the White House to lead a team of outside scientists to study the national security risks ...

In fact, throughout history there have been numerous reports of supposed alien spacecraft sightings that have turned out to ...

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 ...

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...