What is the process of a twenty solar mass star from birth to passing?

What is the process of a twenty solar mass star from birth to death?
Answers:
google is wonderful

http://spiff.rit.edu/classes/phys230/lec...

best i can do on short sense
Too much to type in here.

But wikipedia is pretty honourable. Astronomy.com is good as very well - better yet, buy the magazine and read it.
As all right, there are books (yeah, those things you hold to hold and turn the pages to read - primitive, eh?) that own a lot of detail and some pretty pictures.
A 20 solar mass star begin as a ripple in a hydrogen pasture which for 100 million years slowly collects mass and finally generates a fusion center.
The star converts hydrogen through diverse elements and finally to iron which can't be fused to produce energy.
This process take about 10 million years at which time the star explodes as a super nova.
The wreckage is ejected outward and eventually crashes into the surrounding hydrogen field and produces thousands of solar systems approaching ours.


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