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Professor Stephen Hawking's 1966 thesis on 'Properties of Expanding Universes' went up on the University of Cambridge's website early Monday. Physics fans were so excited, tens of thousands rushed to download it, causing the site to crash. Hawking's doctoral thesis was already the most requested item in the university's library. Previously folks had to pay about $86 to scan a copy. The 75-year-old professor said he hoped folks would not be "disappointed." And said he hoped making it available to all would "inspire people around the world to look up at the stars and not down at their feet; to wonder about our place in the universe and to try and make sense of the cosmos." I'm Krystin Goodwin, FOX News. 来自:VOA英语网 文章地址: http://www.tingvoa.com/html/20171202/516152.html