"Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'

Photo by Ákos Szabó

Photo by Ian Turnell










Time can behave like another direction in space under extreme conditions.
More Stephen Hawking quotes
"The role played by time at the beginning of the universe is, I believe, the final key to removing the need for a Grand Designer, and revealing how the...
"Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp s...
"Before 1915, space and time were thought of as a fixed arena in which events took place, but which was not affected by what happened in it. Space and ...
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