Question

How does a nebula change into a protostar?

Answer 1

Hint:In this question we have to find the process that occurs when a nebula changes into a protostar. For this first we will understand what nebula and protostar are. Then we will understand the process of formation of protostar from nebulae.

Complete step by step answer:
Nebula- Nebula is a very big cloud of gas and dust in space. Sometimes it is made up of the dust and gas thrown out at the explosion of a star. Sometimes a nebula is the one where new stars are being formed. Lifespan of a nebula is around 3 to 4 million years.
Protostar- A protostar is a very star which is still gathering mass from the parent cloud. The protostar is the earliest state in stellar evolution. Protostar is a low mass star. The life of a protostar is around 500,000 years.
At the time of formation of protostar hydrogen gas in the nebula is pulled together by gravity and it starts to spin. As the speed of spin increases it heats up and becomes a protostar. In this process the temperature increases to 15,000,000 degrees and nuclear fusion occurs in the core of the cloud of nebulae.
Result- Hence, it is clear from the above explanation it is clear how a nebula changes into a protostar.

Note:
Hence, the above explanation clears what nebula and protostar are and how a nebula changes into a protostar. These processes are very tedious and take a lot of time to happen. So we should have all the information about all the components of the question to find a conclusion.