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Star Life Cycle

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by

Stacey Dolan

on 8 February 2016

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Transcript of Star Life Cycle

Depending on the Mass of the Star...
Stellar Nebula
ProtoStar
Proto info
Or
Main Sequence Stars

Main Sequence Stars
Gigantic Clouds of dust and gas.
Where all stars are created
A "Star Nursery"
When the contracting cloud burns so hot that nuclear fusion begins
Stage where most of stars spend their lifetime.

Our sun is a medium sized main sequence.
Red Giant
When a stars fuel begins to run out, the center shrinks and the outside expands

Eventually the outside will drift into space
Planetary Nebula
What is left of the core of a red giant

Made of pure carbon

About the size of Earth, but the density of one teaspoon would be as much as an elephant
White Dwarf
MASSIVE STARS
Stars that are between 1.5 to 3 times the mass of the sun
Red Supergiant
Gives red color because the layers have expanded, producing the same amount of energy over a larger space
Cooler than blue or white
Gravity wins in the core and the collapses in an explosion
Supernova
An explosion of a massive star at the end of the stars life

The mass of the star at this point will determine which way it will go on the star cycle.
Neutron Star
Star at least 1.5 but less than 9 times greater than the sun.

Core after a supernova made up of only neutrons
Black Hole
Star at least 9 times greater than the sun
Core collapses into an extremely dense area with a strong gravitational pull that light can not escape
Full transcript