Stars Over Time

Essay specific features

 

Issue:

Science

 

Written by:

Kathy Y

 

Date added:

October 9, 2014

 

Level:

University

 

Grade:

A

 

No of pages / words:

5 / 1135

 

Was viewed:

9920 times

 

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Essay content:

All stars also have many more variations in each stage of life. The life of a star begins in a nebula, a great collection of gas and dust. Once enough mass has accumulated into a single object, gravity forces the mass to collapse into the center. Due to pressure and friction, the core gets so hot that it begins nuclear fusion and a protostar is made...
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The age and the mass of stars tell every thing about a stars physical properties and placement into each of the categories. The Hertzsprung - Russell diagram (HR Diagram) graphs stars luminosities over the stars spectral class. Luminosity describes how bright the star is (I, II, III, IV, V); spectral class describes its temperature (O, B, A, F, G, K, M)...
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