“This is the place time travel can are out there in and it is scientifically correct and there are real-world repercussions from that,” says Emma Osborne, an astrophysicist on the University of York, in the UK. Let’s start with Albert Einstein’s theories of relativity, which set out an outline of area, time, mass and gravity. Could we ever construct a time machine and travel into the distant previous, or ahead to see our great-great-great-grandchildren? Answering this question requires understanding how time actually works – one thing physicists are removed from sure about. So far, what we are in a position to say with confidence is that travelling into the future is achievable, however travelling into the previous is both wildly tough or absolutely inconceivable.
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