Time travel IS possible - but only if you want to go to the future and not come back, says Professor Brian Cox | Mail Online: "Travelling through time may not be the far-fetched science fiction theory it was once thought to be, according to Professor Brian Cox.
Speaking at the British Science Festival, Cox declared to the audience: 'Can you build a time machine? The answer is yes.' However, the theory only works when travelling to the future, and Cox explained that once in the future it's not possible to come back."
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