How many galaxies are there in the universe?

1. There are about125 billion galaxies observed by humans, and each galaxy has hundreds to trillions of stars. There are about 40 billion planets in the Milky Way. The so-called galaxy refers to a galaxy operating system composed of many star systems, interstellar dust and other substances, and the Milky Way is a galaxy that we are very familiar with.

2. In a galaxy, all star systems will move around the center of mass of the galaxy. In the universe, almost all galaxies contain a large number of multi-star systems, clusters and various nebulae. As far as our galaxy is concerned, it contains at least 654.38+050 billion star systems, as well as a large number of other interstellar gases and dust, as well as black holes.

3. The solar system exists in the star system of the Milky Way. Not only the solar system rotates, but also the whole galaxy rotates. In addition, the Milky Way will be bound by gravity. When we observe the Milky Way galaxy with instruments on Earth, it looks like a silvery white ring.