A Compendium of Astronomy: Intended to Simplify and Illustrate the Principles of the Science : and Give a Concise View of the Motions and Aspects of the Great Heavenly Luminaries : Adapted to the Use of Common Schools, as Well as Higher Seminaries
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according ancient angle aphelion appear astronomers atmosphere attraction authors axis called cause centre century circle clock comets commence common computed conjunction considered continued dark declination diameter direction discovered disk distance divided earth east eclipse elevated equal equator equinox figure force four given globe greatest heat heavenly bodies heavens hemisphere Hence Herschel horizon hour inclination increase inhabitants Jupiter known latitude less letter light longitude lunar magnitude Mars mean Mercury meridian miles month moon moon's motion move nearly night node object obliquity observed opposite orbit parallax parallel passing period planets Plate poles present rays refraction represented respecting revolution revolve ring rising rotation round satellites Saturn seasons seconds seen shadow side slow solar stars sun's supposed surface tides tion Tropical true turned Venus visible whole