Star Life Cycle

by: Emilee S.

A stars Life cycle

Stars have life cycles just like us, even though they are not "alive." This means that they go through infancy, maturity, and old age.

Image of a stars life cycle

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Life Span of a Star

Most star see in our sky are between 1 to 10 million years old. The life span of a star depends on the mass of the star. The big the star the shorter the stars life and the smaller the star the longer its life is. smaller stars usually live 10's of millions or billions of years old, whereas bigger star usually only live several millions of years old. This is because the bigger the star the more gases it uses and when the star uses up all its gases it "dies," so the smaller the star the less gases it uses and the longer it lives.

Star Formation

A star starts it formation by creating up a collection of dust and gases. These dust and gases will start to form a cloud. When the cloud is formed it will then collapses in on itself and starts to heat up pulling more dust and gases in. This is how the the hot core of the star is made . It will take about 50 million years for the star to get to adulthood from beginning of the callaption.

Star "Death"

For the average sized star their death is not that exciting. When the star uses up all of its gases it will expand into a red giant. Then the star will collapse on itself and become a white dwarf. Giant stars on the other hand have a more exciting death. When a giant star uses up all of its gases it will collapse on itself then explode in a supernova. From there the star can either become a neutron or a black hole. The leftover debris from the supernova then becomes parts of other stars.

Supernova

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Life Cycle of a Star Video

Life Cycle of Stars | GCSE Physics | Doodle Science

My Sources

DoodleScience. "Life Cycle of Stars | GCSE Physics | Doodle Science." YouTube. YouTube, 21 Jan. 2015. Web. 08 Dec. 2015.

"Life Cycle of a Star | National Schools' Observatory." Life Cycle of a Star | National Schools' Observatory. National Schools' Observatory, n.d. Web. 08 Dec. 2015.

"Stars - NASA Science." Stars - NASA Science. Kristen Erickson, 15 Oct. 2015. Web. 07 Dec. 2015.

Stars-- Birth and Death. Chicago, IL: World Book, 2010. Print.

"Supernova Goes Off, What Happens?" Supernova Goes Off, What Happens? KillerMovies, n.d. Web. 08 Dec. 2015.