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the Sky Above Us 2 Watchers of the Stars
The Greek Astronomers
The Rebirth of Astronomy
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Andromeda Apollo asteroids astronomer atmosphere Betelgeux bright brilliant Cassini celestial centimetres centre century clouds clusters colour comet constellation Copernicus craters dark diameter discovered discovery disk distance dwarf Earth eclipse famous galaxies Galileo Greenwich Hale reflector Halley Halley's Herschel Hven hydrogen Jupiter Kepler kilometres per second known later less light light-years Lord Rosse lunar magnitude Main Sequence Mariner Mariner 9 Mars Martian measure Mercury Messier meteorite meteors metres million mirror Moon Mount Wilson move round naked eye named nebula Neptune never Newton object observations Observatory ofthe optical orbit Orion Patrick Moore period Photograph by Patrick pioneer planet planetary Pluto position quasars radio telescope reflector at Palomar refractor ring rocket rotation round the Sun Royal satellite Saturn seems seen Sirius Solar System space spectrum spiral star catalogue stellar Sun's sunspots supernova surface temperature theory Tycho Uranus velocity Venus visible Voyager White Dwarf