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Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'
Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'
Stephen William Hawking was an English theoretical astrophysicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge. Between ...
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