The world today paid tribute to physicist Stephen Hawking, who died today at the age of 76.
The famed British theoretical physicist passed away peacefully at his home in Cambridge this morning after a long battle with motor neurone disease, his family has revealed.
And the celebrity and scientific world, including NASA, Katy Perry, and Piers Morgan, took to Twitter to pay their respects to the father of three.
Posting a video, NASA tweeted: ‘Remembering Stephen Hawking, a renowned physicist and ambassador of science. His theories unlocked a universe of possibilities that we & the world are exploring.
‘May you keep flying like superman in microgravity, as you said to astronauts on @Space_Station in 2014.’
