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Evolution of Stars

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on 20 April 2016

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Transcript of Evolution of Stars

How do stars form?
- star formation begins with condensation of a large cloud of gas, ice, and dust called a NEBULA.

- As stars grow older they shrink in size and become denser.
The end of a star
At the end of the stars life it either becomes a black hole, neutron star or a white dwarf. depending on what life it lived.
Star Collapsing
Only very massive stars collapse.
They are so massive that they continue past the neutron stage and create a black hole.
Black hole ==> is something so dense that nothing can escape its gravity if it gets too close.

Alternate ending
If a star is not massive it willl end its life as a white dwarf.

This is the end for a smaller star.
Evolution of Stars
NOVA
- Stars that become thousands of times brighter suddenly it is called a nova
Our Sun
The sun is a main-sequence star (red dwarf)
it is middle aged
the surface of the sun is called the photosphere
the dark spots are called sun spots
Assignment
You are the proud new owner of a star. You are so happy that you want to tell everyone the story of it's life.
Here are your options
- Baby book
- Comic strip
- Flow chart
- Poetry using words and pictures

Exit Question
Will our sun ever become a black hole? Why or why not?
Full transcript