An auditorium erupted in a chorus of “Happy Birthday to You” followed by traditional cheers of the English “Hip Hip Hooray” on Sunday at a 75th-birthday celebration for famed physicist Stephen Hawking. Following lectures by British physicist Brian Cox and gravitational-wave researcher Gabriela González, Hawking took the stage at Cambridge University in England to reflect on his past 75 years. “Actually, for those keeping count, I am closer to 75 and a half, but that shouldn’t get in the way of a good celebration,” he joked, using his computer-generated voice. Hawking’s birthday is actually in January, but Cambridge organized the… Read More