Free Download Panos Photinos, "Visual Astronomy: A Guide to Understanding the Night Sky "
English | ISBN: 1643278878 | 2014 | 115 pages | PDF | 7 MB
Visual Astronomy introduces the basics of observational astronomy, a fundamentally limitless opportunity to learn about the universe with your unaided eyes or with tools such as binoculars, telescopes, or cameras. The book explains the essentials of time a
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