A lot of materials, together with super-heavy energy, would be condensed when they collided with each other at a high speed. They would grow larger and larger, forming their own gravitational field and magnetic field. Eventually, all kinds of planets would be born. Such a phenomenon was very common in the early years of the big bang. Most of the stars, planets, and other high-density, large-mass celestial bodies in the universe were formed in such a way.
However, since the birth of the Pangu Universe, hundreds of billions of years had passed. The best time to create stars and planets had passed, and the universe had entered a relatively stable mature period.
In this phase of the universe, most of the celestial bodies that were born under certain conditions had already been born. Generally speaking, very few celestial bodies above the planetary level were born.