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In Awe of the Heavens
The Skywatchers of Egypt
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ancient astronomers ancient Greek ancient observatory Arab astronomers Asimov astrolabe Babylonians ball built calendar changed its position Chichen Itza circle the Sun comets constellations Copernicus Copernicus's Danish astronomer Dark Ages disk distant dust and gas Earth eclipse Edmund Halley Eratosthenes European astronomers explosion figure out planetary flood Gareth Stevens Greek astronomer Greek books Greek science Greek view Greeks had thought Gum Nebula heavens Hipparchus information about astronomy instruments Italian astronomer Jupiter Library System Macmillan Manitoba Mayan Mexico million mistaken identity modern astronomy Moon Museum never know Nicolaus Overdue notices philosopher Pythagoras planet Venus Planetarium planetary movements planetary positions planets circle Polish astronomer predict Ptolemy Saturn shadow Sirius skill in mathematics Solar Space star map star-finder Stonehenge studied the movement study the sky Sun and stars sundial supernova telescope was invented Thales Today Tower of Babel Tycho Brahe Universe vast Pacific Ocean watch the sky