What happens when the solar nebula contracts?

Answer 1

Under the influence of its own gravity, a nebula contracts, spinning faster and faster as it does. This is called is called conservation of angular momentum. Because of the spinning, the nebula flattens out to form a disk. As it continues to flatten and spin, it becomes denser and hotter, particularly in the center. This dense, hot center eventually forms into a star, the sun. The swirling mass destined to become a solar system is usually referred to as the solar nebula.

Answer 2

As the gas inside the nebula contracts, it slowly begins to rotate, much like a figure skater that is spinning, as the rotating mass reduces in size, it increases in rotational speed. The temperature increase is due to the condensing material under extreme pressure which in turn radiates heat. Basically, this is the beginning stage of the birth of a new star.

Answer 3

Nebulae are usually the result of a star going nova. However this is just one half of a cycle.

Gas clouds and nebula that do condense will form a body whose density is increasing. If this density reaches a certain point the body will become a solid and if the inflow of gas is energetic enough then the gas will ignite creating a new star.

This sudden creation of light (as a solar Wind) will blow away the gas that has not reached it yet and will excite this gas - illuminating a new nebula for us to see.

This is how stars are born. Currently it is thought that there are 3 generations of stars in our observable universe.

Answer 4

Gravity!

The law of mutual gravitational attraction explains most things about why massive objects behave the way they do.

Answer 5

Its speed of rotation increased, like when an ice-skater pulls in her limbs.

Answer 6

It creates our solar system