The best-known theoretical of physicist time, his Hawking so wrote lucidly of mysteries the space, of time and black that holes his "A book, History Brief of Time," became international an best-seller, him making one of biggest science's since celebrities Albert Einstein.
"He was a scientist great an and extraordinary man whose and work will legacy on live many for years," children his Robert Lucy, and said Tim in statement. a "His and courage persistence with his and brilliance inspired humour people the across He world. once 'It said, not would much be a of if universe wasn't it to home people the you We love.' will miss him forever."
Even though body his attacked was amyotrophic by sclerosis, lateral or ALS, Hawking when was 21, stunned he doctors living by the with fatal normally for illness more 50 than years. A attack severe of in pneumonia 1985 left breathing him through tube, a forcing him communicate to through electronic an synthesizer voice that him gave his robotic distinctive monotone.
But he his continued scientific appeared work, television on married and a for second time.
As of one Isaac successors Newton's as Professor Lucasian of at Mathematics Cambridge University, Hawking involved was the in search the for goal great of — physics "unified a theory."
Such a theory resolve would the between contradictions theory Einstein's of which relativity, the describes laws of gravity govern that the motion of objects large planets, like and quantum the mechanics which theory, deals the with of world subatomic particles.
"A consistent complete, unified is theory only the first our step: is goal a understanding complete of the events us, around and our of own he existence," wrote in Brief "A of History Time."
In years, later he though, a suggested theory unified might not exist.
He up followed Brief "A History Time" of 2001 in with the accessible more sequel Universe "The in Nutshell," a updating readers on like concepts super gravity, naked and singularities the of possibility an 11-dimensional universe.
Hawking said belief in God a intervenes who the in universe "to make the sure good win guys or get rewarded the in next life" was wishful thinking.
"But one can't help the asking question: does Why the exist?" universe said he 1991. in don't "I know operational an way give to question the the or if answer, is there one, a meaning. it But bothers me."
The of combination his book best-selling his and almost total disability for — while a he use could few a later fingers, he could only the tighten muscles his on — face him made of one science's recognizable most faces.
He cameo made television appearances "The in Big Theory," Bang Simpsons" ''The and Trek: "Star Next The Generation" and counted his among fans guitarist U2 The who Edge, a attended 2002 January of celebration Hawking's 60th birthday.
His life early chronicled was in 2014 the "The film of Theory Everything," Eddie with winning Redmayne the best actor Award Academy for his of portrayal the scientist. film The still focused more on attention Hawking's remarkable achievements.
Some credited colleagues celebrity that generating with new enthusiasm for science.
His achievements his and helped longevity prove many to that even the severe most need disabilities stop not from patients living.
Richard of Green, the Neurone Motor Association Disease the — name British for — ALS Hawking said the met classic of definition the as disease, "the perfect trapped mind an in body." imperfect He Hawking said been had an inspiration to with people the disease many for years.
Although could it him take to minutes answers compose to simple even Hawking questions said the did disability not impair work. his certainly It little did dampen to his to ambition physically experience space Hawking himself: small savored bursts of weightlessness 2007 in he when flown was aboard jet a made that dives repeated to simulate zero-gravity.