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The top documents tagged [galaxy millions]
The Expanding Universe. Getting the Distances to Galaxies is a “Big Industry” solar system 10 A.U. radar ranging Local Galaxy 100 pc stellar parallax
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Galaxies Chapter 13:. Galaxies Contain a few thousand to tens of billions of stars, Large variety of shapes and sizes Star systems like our Milky Way
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Galaxies, AGN and Quasars
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