Stephen Hawking, the theoretical physicist whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died at 76...

Word by painstaking word, Stephen Hawking produced a masterwork of popular science that outlined his vision of time, the universe and humanity's place within it...

Stephen Hawking, the theoretical physicist whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died at 76....

Family spokesman says physicist Stephen Hawking has died at the age of 76...

A federal judge says the U.S. Department of Energy doesn't need to make public documents involving spent commercial nuclear fuel shipments to eastern Idaho sought by former Idaho Gov. Cecil Andrus...

Nicanor Parra, a Chilean physicist, mathematician and self-described "anti-poet" whose eccentric writings won him a leading place in Latin American literature, has died. Parra was 103....

A vast international experiment designed to demonstrate that nuclear fusion can be a viable source of clean and cheap energy is halfway toward completion...

Russian authorities have confirmed reports of a spike in radioactivity in the air over the Ural Mountains...

In a coordinated look at one of the universe's most violent acts, astronomers hit the gold mine of science and even figure out the cosmic origins of gold...

The best ever view of two neutron stars crashing confirmed several theories that had not yet been proven....