What is teoryang nebular in a short sentences?

Teoryang Nebular, or the Nebular Hypothesis, is a model that explains the formation of solar systems, including our own. It posits that a cloud of gas and dust (a nebula) collapsed under gravity, leading to the formation of a spinning disk. As the material coalesced, it formed the Sun at the center, while planets and other celestial bodies formed from the remaining debris in the disk. This theory helps explain the structure and composition of planetary systems.