Everybody have a curious thinking about time travel. Everybody have a wish to time travel. But there is a question about the time travel is “it is possible in real life. ”
Theoretical answer: Yes it is possible when we travel faster than the speed of light. The speed of light is 300,000 km/sec. In fiction,time travel typically achieved through the use of a hypothetical device known as time machine.
Time machine: The idea of time machine was popularized by H.G.Wells' 1895 novel The Time Machine. But the travel is still impossible because all these theories can't be tested practically. Scientists are trying to make a time machines but it all seems possible in science-fiction movies.
The Einstein theory: Albert Einstein, the great scientist gave us a time theory that changed our prespective of time. His theory of relativity proved the difference in the passage of time for each person. Time can be relative! time travel deals with space and time. These factor affect the relativity of time for a person. This creates a time paradox,which is called twin paradox.
The subatomic theory: Time travel needs you to match the speed of light. You will have to travel at the speed of 299792458 miles per second. This will create a time warp. If we propel subatomic particles into space with the speed of light,the will cross galaxies within a minute. From their perspective,life on earth would move in slow motion.
Stephen Hawking theory: According to Stephen Hawking, time travel is possible, and not just in the way may might think. Backward time travel is not supported by Hawking's theories, because new matter(a new you) would need to be created-one in the present,traveling back in time.
Wormholes: Wormholes are hypothesised spacetime shortcuts that could connect two distant places, allowing travel not just through space but also through time. Creating stable and transversable wormholes, on the other hand,remains a challenge.
Time dilation: Time travels more slowly for things travelling at near-light speeds, according to Einstein's theory of relativity. This could allow for future time travel because a person travelling at such speeds would experience time moving more slowly than people on earth
Rules of time travel: You can't change past. It will create a disturbance in flow of time. You can't bring anything from the other timeline into yours. You can't encounter your persent self in another timeline.
Conclusion: The time travel is still impossible because the above mentioned theories can't be tested practically. It seems to be impossible but the idea of time travel fascinates us all.
