On 28 June 2009, at 1200 UTC, Stephen Hawking hosted a party for time travellers at the University of Cambridge. Among the careful preparations, the most important was to invite guests only after the event had taken place. Much to Hawking's disappointment, nobody showed up. Travelling through time may never be feasible, but it remains a perennially popular topic in science fiction, philosophy and theoretical physics. In Time Travel, lames Gleick provides an absorbing history of the idea, eloquently elucidating the reasons for its enduring appeal.
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