A Handbook of Descriptive and Practical Astronomy |
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Common terms and phrases
angle annular annular eclipse apparition appearance April astronomers atmosphere Boötes BRITISH 30SE62 MUSEUM Cassini Catalogue centre Chinese obs Chron circle colour comet commencement constellation corona cycle dark diameter disc Discovered Dist distance Dominical letter Double star Double star Mag Earth elliptic orbit Encke Equinox European obs Halley Halley's Halley's Comet heavens Herschel Hind horizon hour instrument interval July June Jupiter Kepler length light limb lunar Ma-tuoan-lin Mailla March Mars mean Mercury meridian meteors miles months Moon Moon's motion naked eye Nebula node object Observatory observed parallax perihelion period phenomena phenomenon Phil planet polar axis protuberance Ptolemy refraction remarkable Right Ascension round satellites Saturn seen Sept sidereal solar solar eclipse Sun's Tables tail telescope total eclipse Trans transit transit of Mercury Tycho Brahe Uranus Ursa Ursa Major Venus visible weeks ΙΟ ΙΟ ΙΟ