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

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

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

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

This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

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

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“Are the current panels’ investigations a redux of the 1950s and ‘60s, where those panels were created to basically put this ...

A Pentagon strategist with 46 years of national security experience argues that disciplined inquiry, not public certainty, is ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...