Worm hole is a tunnel that connects two places in space. By passing through a wormhole, we can, in theory, travel a great distance across the universe but with a very short time, even if the two ends of the wormhole are very far apart.

For example, if you have one end of a wormhole at school or campus and the other end at home, then you can simply walk through the wormhole in the class to go home in a short time.

Or if there is a wormhole right in the Earth’s orbit with one end in the Andromeda Galaxy, just entering the wormhole to reach Andromeda in a matter of days – doesn’t need millions of years.

Wow, wormholes are useful! But unfortunately, so far wormholes only exist in the realm of science fiction.

### Does Wormholes Actually Exist in Our Universe?

As far as astronomers know, there is no wormhole like that in our universe. Astronomers have not found the slightest evidence of its existence and do not even know how wormholes can form.

“The existence” of wormholes so far, according to Space.com, is only in mathematical calculations, because its existence does not violate any current physical law. So, we can say that wormholes can be exists based on the theory.

In science, theory is an idea or a way of describing what happens or can happen in reality. You may have heard of the general theory of relativity, which was coined by physicist Albert Einstein more than a hundred years ago.

The general theory of relativity basically describes what gravity is, which allows us to stay on Earth and keep the Earth orbiting the Sun.

Well, this general theory of relativity also describes wormholes mathematically.

Then, how do wormholes work in theory? According to Scientific American, let’s find out what is called space-time first.

Astronomers often imagine space-time as a stretchy or elastic sheet of cloth. Everything in our universe is on this imaginary sheet of space-time cloth.

Because space-time is imagined as a sheet of fabric, we might assume that space-time is a two-dimensional surface. A person walking on a cloth can choose two types of movements: back and forth or left and right. Even so, in fact, space is three dimensions: you can also jump up and down!

The fact is, there is a fourth dimension: time. You probably haven’t considered time as a “dimension”, but physicists think of it that way. Put all the dimensions together and you get what is called space-time.

Back to the wormholes, imagine we want to go from place to place in space-time, say from a home to a distant planet. If the trip is done by spacecraft, the possibility can take thousands of years or even longer.

Unfortunately, no one knows where to start or how wormholes can be made in reality. Unlike the black holes that have a lot of evidence in the universe, wormholes are only limited to the results of mathematical calculations.