STARS
In the Universe Stars are sphere of gas held together by their own gravity. Stars are hot gas giants. There are different types of Stars. A star is born by the process of Stellar Nebula. As the star gets older it becomes part of the cloud and gets smaller because of gravity. As it gets smaller it becomes hotter and until its hot enough, nuclear reactions starts in the middle and a new star is born.There are Blue, Blue White, White, Yellow, Orange and Red stars. Stars have many characteristics, the star name, temperature and the luminosity of the stars. The star name tells its common or catalog name. The temperature tells the surface of the star and the luminosity tells how bright a star is including the number times of brightness the star is than our sun.
There are four types of stars. The Supergiants, Giants, White Dwarfs and the Main Sequence Stars. The H-R Diagram of a star tells where to find the main sequence, white dwarf, giant and supergiant are located on the diagram. The Nuclear Fusion inside a star changes into Hydrogen gas molecules into helium molecule. The result of this process is how a star produce energy. H= Hydrogen He = Helium. The life of a star is pretty simple if we put it this way it will be more easy. The Stellar Nebula is where a star is born then becomes a protostar (baby star). As the star gets older and older it becomes a Red Giant. The life of a star has 3 types in the stellar nebula. Sun-like stars, huge stars and giant stars. All these types shows how a stars is born and its lifestyle.
