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The top documents tagged [light year ly]
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light year ly
Chapter 22 Stars. Distance to the Stars The closest star to Earth is, of course, the sun. the average distance between Earth and the sun is about 150.
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Astronomy 1. Terms Astronomy – The study of the universe Universe – Everything known that exists, including space, time and matter Solar System – the.
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Stars, Galaxies, and Cosmology
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