What will the multiverse look like?

What is beyond the universe? This problem has troubled many people. Some scientists responded that the universe is like countless bubbles, each bubble is equivalent to an infinite universe, and the earth is included in one of them. Such a universe is called a multiverse. Since the universe is not just us, what might other universes be like?

If we can visit other universes, we may find that the natural laws of some universes are completely different, and even the matter we know cannot exist. For example, in some universes of the multiverse, there may be no light or matter, or anything recognizable. There are also some characteristics of the universe that we may be familiar with, but the life forms there are completely different, perhaps communicating in a way that we are unfamiliar with.

In Liu's science fiction "Time Migration", several fragments depict another universe: "This universe has only 1 1 elementary particles, and 10 particles form five electron pairs, which run around each other, but the two particles in each particle pair are tens of millions of light years apart, and the relative movement of 1 mm requires millions. There are 1 particles that are free. "

"In the vast black space, a big silver film extends infinitely in all directions, and the big film is dotted with small spheres of various colors, like a huge mirror with colorful dewdrops rolling. This is a colorful universe with a radius of about 40 billion light years, half liquid and half space, and the solid planet in the universe floats on the surface of the ocean. A close-up of a planet appeared in the photo. What is a floating planet? Jupiter is so big! Or autobiography, look at those mountains on its surface, how spectacular it is when it comes out into the water! Look, the water was thrown into the track by the mountain, forming a semi-circular rainbow ring on the sunny side! " .

"The universe presents a bunch of extremely chaotic colors and shapes. This is a six-dimensional universe, which we can't observe; The universe has become an endless black plane, with countless silver straight lines intersecting the black plane vertically. This is a 2.5-dimensional universe. " These universes may violate the basic laws of physics, but they are not our universes. In these universes, the basic physical constants such as gravitational constant, Planck constant and the speed of light are completely different from ours. In this universe, one plus one is not even equal to two.

In the multiverse, we may find the same universe as us, and even find a "copy" of the earth, copying everything on our earth and all mankind. How is that possible? How can there be a doppelganger exactly like us in the universe? Actually, it can be explained clearly with a deck of playing cards. 52 cards, after repeated dealing, some combinations will eventually start to repeat. Because the combination of 52 cards can be limited, as long as the cards are dealt countless times, there will be repeated combinations, and similar principles can also be applied to multiple universes.

According to the laws of nature, the basic elements of matter or particles are similar to a deck of playing cards. No matter where they are in space, the combination of these elements is limited. So if space is infinite and there are infinite universes, there will be repeated combinations. Everyone is actually a specific combination of particles. You and I will be in two places somewhere, and so will others.

This is shocking, but this is the charm of science. The beauty of science lies in letting you know things beyond imagination.