Stephen Hawking, English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge, passed away on March 14, 2018. Dr. Hawking appeared as himself in a number of television series. In which television series did he make the most memorable contribution? After voting, please discuss here. Hawking was born on the 300th anniversary of Galileo’s death and died on Albert Einstein’s birthday, which coincides with Pi Day. Both Einstein and Hawking died when they were 76 years old.