The world is paying tribute to Stephen Hawking, the beloved cosmologist and theoretical physicist who amazed the world both with his brilliant mind and his survival for more than 50 years after being diagnosed with motor neurone disease. Stephen Toope, vice-chancellor of the University of Cambridge says Hawking, who died early Wednesday at age 76, was an inspiration to millions, the AP reports. Hawking's "exceptional contributions to scientific knowledge and the popularization of science and mathematics have left an indelible legacy," Toope says. More:
- "A universe of possibilities." "His theories unlocked a universe of possibilities that we & the world are exploring," NASA tweeted. "May you keep flying like superman in microgravity, as you said to astronauts on @ Space_Station in 2014."