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Encyclopediastarstar, hot incandescent sphere of gas, held together by its own gravitation, and emitting light and other forms of electromagnetic radiation whose ultimate source is nuclear energy. Sections in this article: The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on star from Infoplease:
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- Birth and Death of a Star - Birth and Death of a Star Astronomers think that a star begins to form as a dense cloud of gas in ...
- A Star's Magnitude - A Star's Magnitude Magnitude is the degree of brightness of a star. In 1856, British astronomer ...
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