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The top documents tagged [selfluminous ball of]
Astronomers observe the sky! Astronomy is the study of: the sky & the stars galaxies, cosmology, the solar system (With thanks to Mark Clayson & Mark Ritter)
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Chapter 27.1 Characteristics of stars. Our Sun Our Star The Sun is a self-luminous ball of gas held together by its own gravity and powered by thermonuclear
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