in the life cycle of a star, the masses that begins as the nebula is huge globule of gas and dust.
What is the life cycle about?
The masses that ends as black hole is stars with its final masses in the range from 2 to 3 solar masses.
- The fuel for all stars is nuclear fusion of hydrogen to form helium
- In the first stage of the cycle, the Stars are said to be born in a region that is called high density Nebula.
- A star is said to be born as atoms of light elements are said to be folded under a lot of pressure for their nuclei to be able to undergo fusion.
- Nuclear fusion is known to be the reaction via which two or more light nuclei meet together to create a heavier nucleus.
Note that if often condenses into a huge globule of gas and dust and it is said to widens under its own gravity.
Therefore, Stars starts in the nebula as gravity pulls dust and gas together with a lot of mass to create a protostar.
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