Stephen Hawking's final book suggests time travel may one day be possible – here's what to make of it

Friday, November 9, 2018 - 09:50 in Mathematics & Economics

"If one made a research grant application to work on time travel it would be dismissed immediately," writes the physicist Stephen Hawking in his posthumous book Brief Answers to the Big Questions. He was right. But he was also right that asking whether time travel is possible is a "very serious question" that can still be approached scientifically.

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