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Did you know stars can live for billions of years?

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Gina Cargiuolo

on 28 March 2017

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Transcript of Did you know stars can live for billions of years?

The sun
The sun's life cycle is almost the same as any other star. But there is one big difference, It is our star. The sun is the closet star to earth. The sun was born about 5 billion years ago. The sun is currently in the main sequence of it's life and is half way through it's life. The suns width is 864,938ft. The core of the sun is 5,500 degrees C. The sun is going to die in 6.5 billion years.
Star's death
The main sequence of a stars life is it's adulthood. The stars keep using up the energy and pulling it into itself. The more energy a star has the longer it will stay in the main sequence. It also depends on how many hydrogen particles the star has. The star can stay in the main sequence for as long as 10 billion years.
Did you know stars can live for billions of years?

A star is born from a cloud of dust and gas called a nebula. In the nebula gravity pulls hydrogen particles together and the nebula spins to make the star. Gravity becomes so great that atoms come together and make a spark. This process is called fusion. That is how a star is born.
Eventually a star becomes a red giant. To become a red giant stars need to grow bigger. Also when a star becomes a red giant it turns into a cool, white star. Red giants can also grow 100 to a 1,000 times bigger than the sun. That's the "Old Hood" for a star.
Star's Life Cycle
By: Bella and Emma

Red giants
As you can see a star's life cycle is very cool and different. It is also cool to think that the sun is a giant star that lights our earth.
Big stars and little stars die in different ways. Like one difference is when bigger stars die they leave behind a lot of matter. Which can explode into a supernova or turn into a black hole. When little stars die they leave behind a little matter which can turn back into a nebula or a neutron star. A neutron star is the size of a raindrop. Stars can live for billions of years.
-Bring Science Alive
Copyright 2015
Teachers Curriculum Institute
-100 Things You Should Know About Space
Copyright 2004
Miles Kelly Publishing
-Lightbox The Sun
Copyright 2017
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