What is the universe made of?

The universe is made up of various components. The most important, probably, are the stars, which can be combined into constellations. Also, the constellations are combined into galaxies, and there are a huge number of them. In addition, there are planets near many stars, and there are also other celestial bodies that fly in the vastness of the universe. Also, the universe consists of emptiness and absolute vacuum. And also in the universe there are black holes that have already been scientifically proven. Scientists have advanced the theory that there are also white holes.