How by moving at the speed of light you can travel in future?

Answer 1

The laws of physics say you can't travel at the speed of light. It's impossible. You can get arbitrarily close, but accelerating an object with a rest mass to the speed of light in a vacuum would take an infinite amount of energy.

I'm going to recommend a couple of books to you that may answer what you were trying to ask. Obviously most modern physics texts are going to discuss relativity to some extent, but the Feynman Lectures on Physics is a good investment if you're interested in physics generally. Alternatively, for a more readable explanation that's not as rigorous, the Mr. Tompkins books by George Gamow attempt to explain what the world would be like if certain physical constants were different... in particular, in one he shows what it would be like if the speed of light in a vacuum was around 60 miles an hour. Finally, you might try Geometry, Relativity, and the Fourth Dimension by Rudy Rucker if you can find it at your local library.

Answer 2

Moving at the speed of light means traveling at a constant speed of approximately 299,792 kilometers per second. According to the theory of relativity, time dilation occurs as one approaches the speed of light, which means that time slows down relative to someone moving at a slower speed. This leads to the phenomenon where a person traveling at the speed of light would experience time differently than someone at rest, allowing them to potentially travel into the future.