A Question And Answer Guide To Astronomy FÖR SKYTTE 1/3 lower co-witness med Razor

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A Question And Answer Guide To Astronomy FÖR SKYTTE 1/3 lower co-witness med RazorAre we alone in the Universe? Was there anything before the Big Bang? Are there other universes? What makes stars shine? Where does Earth's water come from? Why is the night sky dark? Was there ever life on Mars? How do telescopes work? A question and answer guide to astronomy, Authors: Carol Christian, Space Telescope Science Institute, Baltimore ,Jean Ren Roy, Gemini Observatory, La Serena, Chile This engaging guide book answers all these questions