Stephen Hawking's final theory challenges the existence of the multiverse and argues the Big Bang had a finite boundary, defined by string theory and holograms.
By Nsikan Akpan
The life of renowned physicist and author Stephen Hawking was celebrated Saturday in the English city of Cambridge.
By Gregory Katz, Associated Press
Stephen Hawking overcame the loss of his working limbs and voice to become the best-known theoretical physicist of his era, upending the scientific consensus that nothing escapes the intense gravity of black holes. Earning countless honors, he used his fame…
By Miles O'Brien
Stephen Hawking, one of the world's most recognizable scientists, died early Wednesday morning. He was 76.
By Nsikan Akpan
Renowned physicist Stephen Hawking and Russian-born billionaire announce new quest for space exploration.
Russian tech entrepreneur Yuri Milner funds the most ambitious hunt to date for alien life, thanks to a new $100 million project called the Breakthrough Initiatives.
By Rebecca Jacobson, Inside Energy
Last week, Stephen Hawking declared "there are no black holes." What exactly that means has physicists scratching their heads. The problem is 40 years of paradoxes as scientists try to understand how black holes seem to break two rules of…
By Katherine Harmon
An expert on Lou Gehrig’s disease explains what we know about this debilitating condition and how Stephen Hawking has beaten the odds.
President Barack Obama awarded 16 people with the Presidential Medal of Freedom on Wednesday. Judy Woodruff offers a look at the ceremony.
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