A protostellar disk is an object that develops a circumstellar disk around it once it has condensed and become the star itself. The disk is formed when the star’s surface is pushed by gravity toward the center of the star, and when this happens, the material in the disk is stripped away and begins to form a protostellar disk.
This is because once a star has gone supernova, the gas in the inner parts of a collapsing cloud is pushed toward the center, forming a disk around the star. When the star itself collides with the surrounding cloud, the material gets stripped away by the gravity and starts to collapse into a protostellar disk. It’s this process that forms a protostellar disk that then can form a protostar.
This idea of a collapsing cloud forming a protostellar disk is an example of the “clumpiness” effect. This describes a process that happens when the gravitational forces pull material from one region of a cloud to another. Material at the center of the cloud is pulled toward the center of the cloud, while material at the edge of the cloud is pulled away from the center. Clumpiness is why a protostellar disk can be formed.
The clumpiness effect is a physical process that happens in the cloud. It happens as the cloud moves. When its density decreases (the cloud shrinks) the clumpiness occurs. This process is called gravitational clumpiness. This clumping is caused by gravitational force.
Clumpiness is a physical process that happens when a material falls into a region of a cloud. The cloud is falling into the region and is thus causing the material to become solid. When the cloud falls into the region the clumpiness occurs.
The thing is, cloud is nothing more than a small object that appears to have been dragged along by gravity. The cloud is moving. Every time a cloud falls into a new location, the cloud collapses.
The clouds that come rushing up into our region of space are called protostars. They are the precursors of stars, and as they form they collapse into massive clouds of gas and dust. This is how protostars form, and it is this collapse that sets the stage for other stars to form.
But protostars are not the only objects that are collapsing. Many stars also collapse into clouds. In fact, there are actually two types of objects that collapse: protostars and planetary nebulae.