As the speed of light is constant for both parties, it would seem as if time would be moving much slower on the rocket, meaning that when the rocket returns to Earth, thousands of years could have passed.
While this theory is generally accepted by physicists for time travelling into the future, going back in time would not be achievable under this theory.
However, astrophysicist Ron Mallett told CNN that by using lasers, experts could ‘bend’ space-time, allowing time travel into the past.
Dr Mallett said: “To put it in a nutshell, Einstein said that time can be affected by speed.
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