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Created with Fabric.js 1.4.5 Of A Star The Life Cycle Of a Star The Main Sequence Star Nebula SERIOUS? Supernova Black Holes YES Life Cycle First is the Nebula. Stars are born within the Nebula. The Nebula is a dark cloud full of hydrogen, gas, and dust. When the star is born, it can be ten thousand times brighter than the Sun. Next is the Supernova.When the Supernova occurs, the star gets hotter and thicker. It lets go of its energy.This is the death of the star. Neutron Star If a star dies in a catastrophic Supernova explosion,the remaining core becomes a Neutron star.As its name applies, a neutron star is an exotic type of star that is made entirely out of neutrons.Basically, it collapses under gravity.If stars are even more massive, they will become black holes instead of neutron stars after the supernova goes off. If the star was more than eight times bigger than our sun, the leftovers will be a black hole. A black hole is the end of a very large star.It has a lot of strong gravity. Nothing can escape it. A black hole does not give off light, so we cannot see them. Stars enter the longeststages of its life cycle knownas the main sequence.The majority of allstars in our galaxy, and eventhe Universe, are mainsequence stars. Main sequence stars can vary in size, mass and brightness, but theyre all doing the same thing:converting hydrogenin their cores, releasing a tremendous amount of energy. Red Giant Star When a star has consumed its stock of hydrogen in its core, fusion stops and the star no longer generates an outwardpressure to counteract the inward pressure pulling it together. A shell of hydrogen around the core ignites the life of a star, but causes it to increase in size dramatically. The aging star has become a red giant star, and can be 100 times larger than it was in its main sequence phase. In the final stage of a stars life cycle, a star may completely run out of hydrogen fuel in its core and lack the mass to forcehigher elements into fusion reaction. If this happens, it shrinks and becomes a white dwarf star.The outward light pressure from the fusion reactionstops and the star collapsesinward under its own gravity. A white dwarf shines becauseit was a hot star once, but theres no fusion reactions happening any more. White Dwarf Star By: Molly Malone
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