The Concept of Time Travel

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What do we exactly means when we talk about Time Travel and Wormholes. Time travel means gazing into time with speed greater than that of light. Going from one place to another with time elapsed much less than what would light have taken. So how to get that that speed to reach a point before light.

Below two simple figures can give us answer. Now seeing the figures what we conclude ? Actual distance between A and B is πr. Now time taken , T = [ πr /( 3x10^8 )] sec. But if somehow we manages to bend space-time and distorts it, then this will bring the two points A and B closer to each other. Now the distance become 2r and time taken T' = [ 2r /( 3x10^8 )] sec.

Thus it is clear that T' < T and thus we can reach to place B even before light does.

So, we concluded that on distorting space-time we can reach a place before light and this is the concept of time travel. This distortion is the fundamental property of the Wormholes. These are like tunnels whose one end is at one place and another is somewhere else in universe light years away.