A Compendium of Astronomy: Intended to Simplify and Illustrate the Principles of the Science ...
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according ancient angle aphelion appear astronomers atmosphere attraction authors axis called cause centre century circle clock comets commence common computed considered continued dark declination diameter direction discovered disk distance Earth east eclipses elevated equal equator equinox figure force given globe greatest half heat heavenly body heavens Herschel horizon hour inclination increased inhabitants Jupiter known latitude less letter light longitude luminous 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 position present Principal rays refraction represented respecting revolution revolve ring rising rotation round satellites Saturn seasons seen shadow side slow solar stars Sun's supposed surface tides tion Tropical true turned United Venus visible whole