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 | NASA: The National Aeronautics and Space Administration (NASA) is an agency of the United States government, responsible for the nation's public space program.
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 | Skymaps.com: Skymaps.com produces and supplies professionally-designed maps of the night sky in digital format.
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| NightWatch: A Practical Guide to Viewing the Universe
Nightwatch: A Practical Guide to Viewing the Universe: The third edition of Nightwatch continues its tradition of being the best handbook for the beginning astronomer.
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| Astronomy For Dummies
: From asteroids to black holes, from quasars to white dwarfs, this new edition of Astronomy For Dummies takes backyard stargazers on a grand tour of the universe.
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