Makers of Astronomy |
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announced appeared appointed Argelander assistant asteroids astro astronomers attention became Bessel bodies born bright career Caroline Herschel catalogue celestial centre century chief clusters comet conclusion Copernican system Copernicus death died director discovered discovery distance double stars early Earth Encke famous father Flamsteed Fraunhofer galactic Galaxy Galileo gravitation Halley heavens Huggins Huyghens hypothesis instruments interest in astronomy investigation John Herschel Jupiter Kapteyn Kepler Laplace later light-years lines Lowell Lowell Observatory Mädler Mars mathematician mathematics Max Wolf measure Milky Moon Mount Wilson nebulae Newton observations Observatory Olbers orbit parallax period photographs Pickering planet planetary Professor proper motion refractor region result Rhijn rotation round the Sun Royal Society satellites Saturn Schiaparelli Schönfeld Schröter scientific Shapley Sitter Slipher Solar System spectra spectroscope spectrum Stellar System Struve succeeded sun-spots telescope theory tion Tycho Brahe University Uranus Venus Verrier W. H. Pickering William Herschel wrote young