Sushiksha

Have you ever wondered about having a special port which could send you from your home to your school? I know you have. Almost every one of us has wished for this to happen. Big minds have thought of jumping from one earth to mars and even farther with a single jump. Of course, all these are possible. Possible in our imagination, and on a paper full of equations under the concept of a wormhole. 

What is a wormhole?
A wormhole is just a thing that connects different places in space-time. This allows people to travel a kilometer, 100 kilometers, 1000000000kilometers, light-years, and 10000000 light-years at just one step. It is no less a circular portal exactly as in a black hole but without an event horizon. This means that you can not only enter it but also come out of it without any difficulties. Years ago, space was considered to be a hard surface. This means that the vacuum was empty space and nothing else. Einstein's theory of relativity opened doors to prove that the vacuum is not just space but a space-time continuum. This means that objects like a planet, stars warp this space. These warps are the ones that lead to a wormhole. Space is assumed to be bent which makes these warps connectable or traversal. How are these warps formed if they exist?

Einstein-Rosen bridges
We all know what a black hole is. The gravity of a black hole is so high that it creates a singularity warping space-time to a great extent. According to this theory, there's no singularity but the deepest point opens up to a white hole where everything which goes inside the black hole is thrown out. This makes the entire thing to be a wormhole. This still doesn't make it traversable because the time taken to reach the deepest point as we know is infinite; meaning humans won't even exist by the time they reach the other edge.

String theory
According to this theory, it is believed that during the big bang, there were quantum fluctuations that took place at a very narrow size. up to 10^-35 m. This led to the formation of strings that are connected almost throughout space-time. This could lead to potential wormholes not only within the galaxy but also to nearby galaxies. The supermassive black hole at the centre of our galaxy is a strong proposal of this theory that cannot be proved as we live 26000 light-years far from it.

Man-made wormholes
Humans are capable of achieving any odds. We can, of course, create a wormhole but it requires a lot many things beforehand. For a wormhole to be created, we need to open portals that has no event horizon allowing anything to be passed from both the ends. The size at both distinct points should be the same as to ensure the substance going in does not undergo distortions.
These are basic needs. If the above beforehand are taken care, we have gravity as our antagonist that converts our wormholes to a singular black hole. in order to stop this, we need a protagonist that can fight back the gravitational pull. Do we have one? Yes. They're called the exotic matter. The exotic matter is something that can withstand the gravitational pull by providing opposite force. It is a hypothetical substance having a negative mass. Its presence is unknown making wormholes exist in our brains only.


Conclusion
Wormholes as we know, for now, does not exist. At one point, if their presence is found, it's still difficult to use them as they violate the time continuum. Travelling through these wormholes creates lots of time paradoxes.

Do you still think they exist? 
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