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

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

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

Cosmologist, Avi Loeb, was chosen to lead a team of scientists to study the national security risks posed by UFOs.

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