Time Travel
Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a widely recognized concept in philosophy and fiction. In all time travel theories allowed by real science, there is no way a traveler can go back in time to before the time machine was built.
in this video you will know that,how is time travel possible? in this video i will tell you about such theories,that make time travel possible.
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