The Astronomy of Milton's Paradise Lost

61 Cygni allusion apastron appearance arrived ascertained astro astronomers attraction axis beautiful believed binary binary star bright brilliancy called celestial centre clouds clusters colour comet constellation Copernican theory Copernicus created dark described diameter dimensions disc discovered discovery distance diurnal double stars ecliptic existence firmament fixed stars Galaxy Galileo globe gravitation heavenly bodies heavens Herschel Horrox imagination irregular Jupiter Kepler known light luminous lunar magnificent magnitude mass miles Milky Milton Moon Moon's motion naked eye nature nebula night nomical object observatory observed occupied Ophiuchus orbit Paradise Lost parallax path perceived periastron period photosphere planetary planets Pleiades poem poetic pole portion position Ptolemaic Ptolemaic system regarded regions resembling revolution revolve round ring rotation round the Earth round the Sun satellites Saturn shining sidereal Sirius solar system space sphere spots starry stellar sun-spots Sun's surface telescope thou tion Tycho Brahé universe VARIABLE STARS velocity Venus visible whilst