Wormholes - Fact or Fantasy?

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A Wormhole is a theoretical passage through space-time that could create shortcuts for long journeys across the universe. Wormholes are predicted by the Einstein's theory of general relativity. It says that space is made up of 3-dimensional space and time as a fourth dimension. This space-time bents or stretches due to the objects it has. The smaller the object is, the more is the space bents which creates a wormhole.

Lets understand in easier way, Suppose you are in a room of a large building, and you need to go to the room just below your room, normally you would walk through the lobby and then go down through stairs to the room. But what if you make a hole on the floor and directly jump to the another room. 

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Similarly, Wormhole connects two points of space-time, which will let you travel between two space points in a very short time, even faster than the Light. It will also let you time travel in past or future.

Technically it is not viable, it sounds like a Sci-Fi movie. But there are chances that wormholes really exists. 

What do you think, Wormholes are real or just fantasy?, comment your answer below.
I am always curious to know about the reason behind the existence of anything.

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