He eventually became confined to a wheelchair and dependent on a computerised voice system for communication. When the news broke that he had died, social media flooded with condolences as it should have, but tacked on the end of these messages were sentiments that Stephen was "free" from physical disability, along with pictures of him standing out of his chair and gazing at the stars. For a layman, this was far more instructive than his complex theories of black hole thermodynamics.
"There's an apocryphal story out there-I don't know if it's true-that he actually ran over Prince Charles' toes", says Kristine M. Larsen, a professor astronomy at Central Connecticut State University and author of Stephen Hawking: A Biography. Both of those concepts are cornerstones of current black hole theory.
In this March 6, 2017, file photo, Stephen Hawking receives the Honorary Freedom of the City of London.
In 2006 Hawking divorced Elaine and chose to renew his relations with his prior family members, including his ex-wife Jane and their children. In 1986, aged 44, his voice was removed to save his life after an attack of pneumonia.
"I am very saddened to hear of Stephen Hawking's passing". "The answer is, not a lot. I think that's a huge impact", he said.
"My goal is simple", he once said. "Spontaneous creation is the reason there is something rather than nothing, why the universe exists, why we exist". An estimated 10 million copies have been sold worldwide.
He said he wrote the book to convey his own excitement over recent discoveries about the universe.
Elon Musk launching ironic media site with ex-Onion editors
"In order to understand the essential truth of things, I think you can find it in The Onion and occasionally on Reddit". It's believed that the new project is likely going to be another written satirical-news property or website.
Retired Carleton University physics professor David Sinclair shares a field of science with Stephen Hawking but something else, too. Hawking brought that out very clearly. He had recently been diagnosed with a degenerative disease, and it was thought that he might not survive long enough even to finish his PhD. But Hawking tells in his 2013 memoir how Wilde became more and more depressed as her husband's condition worsened.
It was a revelation for theoretical physicists, since the gravity around black holes was always assumed to be so great that it sucked in all energy in their vicinity, including light.
What he produced was a masterwork of popular science, one that guided a generation of enthusiasts through the esoteric world of anti-particles, quarks, and quantum theory.
However, Hawking did once warn that if a person were to attempt to warp space and time, the unwitting experimenter could possibly "trigger a bolt of radiation that would destroy the spaceship and maybe the space-time itself".
In January 2016, he joked that his lack of a Nobel was "a pity".
Hawking was also recognized for his successful research on black holes. "This is a pity because if they had I would have got a Nobel Prize".
After the discovery of the Higgs boson in 2013, nearly five decades after British physicist Peter Higgs developed the theory in the 1960s, Prof Hawking admitted he was disappointed the so-called "God particle" had been found.
The response from Prof Hawking was: "Shouldn't we be content to be cosmic sloths, enjoying the universe from the comfort of Earth?"