Life Cycle of a Star
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Interstellar Medium
Medium which fills the space between stars
Interstellar gas, helium,hydrogen
Its the space between the starsProtostar
It is known as the GAR period in which the stars have contracted large clouds of hydrogen, helium and silicon
Red Giant
-The phase is the red giant
-It uses hydrogen and helium, but helium is the fuel.
-As it expands it surrounds other planets around it, While the atmosphere of the star grows its core shrinks into gravity. the temperature and pressure increases until the conditions increase until its ok for nuclear fusion to start again.
-Nuclear fusion but this time helium is burning as the gas, rather than hydrogen.
-the temperature and pressure increase and the center shrinks