Protostars.

=**Protostar**=

===Stars are born in clouds of dust and gases though most of the gases are mainly hydrogen. Lots and lots of gas is pulled together by gravity to form a cloud. After a while the cloud starts to spin. This causes the gas atoms to bump into each other at high speeds, creating a great heaps of heat.=== ===As the cloud becomes hotter a nuclear reaction takes place inside the cloud and the cloud begins to glow. This glowing cloud is called a protostar. The protostar continues to contract until it becomes a star.=== ===** A protostar is an object that is not quite yet a star. Stars are born in clouds of gas and dust — the ashes from earlier generations of lifeless stars. Step by step the cloud disintegrates under its own gravity. **===