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The Life of a Star

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Albert Yu

on 31 May 2011

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Transcript of The Life of a Star

The Life of a Star Protostar Nebula All stars start out as a nebula, a large cloud of gas and dust spread out in a immense volume A contracting cloud of gas and dust with enough mass to form a star is a protostar. There are 2 types of protostars; low/medium mass and high mass Star A star is born when nuclear fusion starts in its core. A star's life reflects on it's mass. The less mass, the longer it lives. There are 2 types of stars; low/medium mass and high mass Giants Giants are stars that are starting to spread out. They retain out the same mass as the orginal star, but are much bigger. There are 2 types of giants; red giants and supergiants After the giants, there 2 possiblities, a planetary nebula or a supernova Planetary Nebula and Super Nova Planetary nebulas come from low/medium mass stars. When the low/medium mass star turns into a red giant, pieces of the star start to drift off into space, creating a planetary nebula. Supernovas are the results of a high mass star exploding after it runs out of fuel. Supernovas release alot of energy. White Dwarfs, Neutron Stars, and Black Holes White dwarfs are the core of a low/medium mass star. When a planetary nebula spreads out enough, it reveals the star's core. Neutron stars are, as the name suggests, made out of neutrons. They are exetremely hot and are formed after a supernova. The other result of a supernova is the black hole, a super heavy "vacuum" that sucks up everything in its range. END
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