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The top documents tagged [spiral arms project]
Galaxies. Hubble’s Galaxy Classification American astronomer Edwin Hubble was the first to categorize galaxies in a comprehensive way. His observations
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Astronomy 101 Lecture 23, Apr. 23 2003 Normal Galaxies – (Chapter 24 in text) Our galaxy, the Milky Way, has a mass of 10 11 suns. We see many more such
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