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Black holes

Stephen Hawking onstage discussing theories on the origin of the universe in a talk in Berkeley, California, 2007.

Physicist Stephen Hawking, who unlocked the secrets of space and time, has died at 76

Culture

Stephen Hawking, who sought to explain some of the most complicated questions of life, has died at 76.

the Hubble Space Telescope Image of a Frontier Fields galaxy cluster, Abell 2744 (one of the deepest images taken of any cluster in the universe). Credit: ESA/Hubble, NASA, HST Frontier Fields and J. Lotz, M. Mountain, A. Koekemoer, and the HFF Team (ST

These are some of the darkest mysteries of our universe

Science
Artist's drawing of a black hole named Cygnus X-1

A high-powered telescope peers into the dark heart of a black hole

Science

UC Berkeley Astrophysicist on Black Hole Discovery