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

A polarizing Harvard astronomer has been appointed to lead a Trump administration panel studying UFOs. Avi Loeb is leading a ...

This video explores obscure answers to the Fermi Paradox, asking why the universe seems silent if alien civilizations should ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

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

The loudest crash of gravitational waves ever heard provides an intriguing way of studying event horizons, the boundaries at ...