In Christopher Nolan 's sci-fi blockbuster " Interstellar Travel ", the expedition found when they passed through the wormhole: on the spacecraft for one hour is equivalent to on earth for seven years time
Interestingly, There is one person on earth who has also experienced this phenomenon - Sergey Krikalev, the only person who has ever traveled in time.
Sergey Krikalev
Sergey Krikalev , born August 27, 1958, is a Soviet and Russian mechanical engineer and former astronaut.
During the collapse of the Soviet Union, Krikalev was stuck on the miR space station . His return was delayed because the country that sent him into space no longer existed, and he remained in space for ,311 consecutive days , twice the originally requested by the mission. In addition, he holds the record of 803 days orbiting the earth.
Time travel
Falling away from the earth's gravity would make the clock a little faster than running on earth . So every astronaut experienced time dilation , and Krikalev experienced the most, time dilation causing him to be 0.02 seconds younger than his peers .
Of course, 0.02 seconds may be insignificant compared to a human life, but it is still an amazing discovery at present! After deducing the previous theories, the conclusion is that the time is relative to . The special theory of relativity believes that the faster the of an object moves, the slower its time elapses The phenomenon of time dilation has been confirmed by scientists, and GPS also uses the time dilation formula to offset the time difference between high-speed motion and the earth.
"Our GPS system would not work without Einstein's General Theory of Relativity , which also proves that Einstein's theory is correct ." Astrophysicist Ron Mallet Said in an interview.
In order to travel in time, engineers would have to build a spacecraft that could travel at the speed of light , but we don't currently have the technology.
# Space Day of China #
Epilogue
As a fan of time travel, Einstein once wrote: "Those who believe in physics like us know that the distinction between past, present and future is only a stubborn ongoing Illusion. In other words, the time is an illusion ."
Einstein also theoretically proved that this idea is feasible, maybe in the future, engineers will build a spaceship capable of time travel!
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