What do you understand about space?

You know, space is not empty, it is full of all kinds of matter.The planets, gases and dust that we can see with our naked eyes are only a small part of it.There are many other substances and phenomena in the universe, which together form a mysterious and wonderful universe.

Let's learn more about the other substances in the universe.First of all, there is dark matter, which is more than five times more than the ordinary matter we know.Dark matter is a type of matter that we can't observe directly, but we know it exists because it has a big effect on the gravity of galaxies and the universe.Then there's dark energy, which makes up 73% of the universe, but we know very little about it.Dark energy is - a mysterious energy that causes the accelerated expansion of the universe.Next are black holes, which are extreme regions of space-time so dense that not even light can escape.Black holes are one of the most mysterious objects in the universe, and their existence adds to …