Stephen Hawking makes his PhD thesis public for the 1st time
English theoretical physicist Stephen Hawking has made his Cambridge University doctoral thesis 'Properties of Expanding Universes' publicly available, 51 years after graduating. "I hope to inspire people around the world to look up at the stars and not down at their feet," Hawking said. The university said Hawking's thesis was the "most requested" work for its online Open Access repository.