Einstein's theory of relativity allows for the possibility of time travel from "summary" of Time Travel in Einstein's Universe by J. Richard Gott
In Einstein's theory of relativity, time is not an absolute quantity that ticks away at the same rate for everyone. Instead, time is relative and can change depending on the speed at which an object is moving or the strength of the gravitational field it is in. This means that time can be stretched or compressed, allowing for the possibility of time travel. One of the key ideas in Einstein's theory is that space and time are interconnected in a four-dimensional structure known as spacetime. This means that any object moving through spacetime will follow a curved path, influenced by the presence of mass and energy. In the case of extreme gravitational fields, such as those near black holes, time can be so severely warped that it slows down significantly compared to a distant observer. This concept of time dilation has been confirmed through experiments involving atomic clocks and high-speed particles. It shows that time is not fixed and can vary depending on the conditions. If time can be s...
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