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Stages of a Low, Medium, and High mass stars!

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Kayla Hensley

on 8 April 2013

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Transcript of Stages of a Low, Medium, and High mass stars!

By: Kayla Hensley
and Derek Whip The Stages of Low, Medium, and High
Mass Stars! Birth of Low/Medium Mass Stars Protostar Main Sequence Star Planetary Nebula Death of a Low and Medium Mass Stars White Dwarf Birth of a High Mass Star Leo will spend most of his life
span here. Nuclear fusion will now
begin in his core.In this stage, Low mass stars can burn up to 200 billion years while medium stars can burn up to 10 billion years. Red Giant- Leo's core will shrink but his outer portion expands to several times his size.Along with that, he becomes brighter. The outer layers of Leo's
atmosphere begin to drift away. Only the core of him is left. All that is left of Leo is the hot
core of his star. No gases are left,
or any of his dust. Eventually his hot core will cool off and turn cold and go black (stops glowing). Nebula- High mass stars are similar to Leo, a low mass star. There the same in this stage. They are a large cloud of dust with gas intertwined. Nebula
A long time ago Leo, a star, was born. Gas and dust was spread out so far, but not farther that the eye could see. Next,Leo becomes a Protostar with the help of gravity. Gravity pulls all the gas and dust together as one. A Protostar is similar to a normal star. But, a Protostar does not go through nuclear fusion. Protostar Just as as Leo, the dust and gas contract together. Gravity also is a component in this. Main Sequence of a High Mass star In this case , Leo and high mass stars in this stage are not similar. These stars burn fuel much more quickly. Also, they also only live a life span of 10 to 15 million years. Death of a High Mass Star Supergiant- Instead of the star turning to a Red Giant, like Leo, its a Supergiant. They are much larger and brighter than Leo ( A Red Giant). They run out of fuel and expand. Supernova Unlike Leo, the next stage is Supernova. This is when a the star collapses under its weight and suddenly explodes. It lasts for hours and the star blazes millions of times brighter. After this, some of the material from the star can expand into space. Some of this material can even become part of a new nebula. Neutron star Finally, all of it turns into a small/dense ball. But, there are still spinning neutron stars which make radio waves still in the star. OR A star can turn into a Neutron star or it can turn into a Black Hole. A Black Hole is an EXTREMELY dense "thing" that has gravity. Its gravity is so strong that nothing can escape it. Works Cited www.Scirus.com
www.astroreview.com Black Hole Black Dwarf After the White Dwarf is cold and stops glowing, its is called a Black Dwarf. Leo is at his final stage in his life cycle.
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