Stars Over Time
This is the first 1,000 characters of 1146 words (4.58 pages) in the essay titled Stars Over Time
|Stars Over Time
Stars over Time
A star is a self-luminous ball of gas bound by gravity into a single object and powered by nuclear fusion at the core. There are trillions and trillions of stars in our universe and all are different and unique. There are many stages of stars life including main sequence stars, red giants, white dwarfs, neutron stars, and black holes. 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. 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 (...
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