A Short Course in Astronomy: And the Use of the Globes

altitude angle angular distance aphelion apparent diameter apparent motions appear to move astronomers atmosphere axis bright called caused celestial celestial sphere centre circumference comet constant day constant night constellation density direction discovered disk diurnal earth earth's surface eccentricity ecliptic elongation equal equator equinoctial equinox force greatest heavenly bodies heavens hemisphere Herschel horizon inclination inferior conjunction inferior planet Jupiter latitude latter longitude luminous magnitude Mars mean distance Mercury meteors millions of miles Minor Planets moon moon's nearly nebulæ Neptune node number of degrees oblique observed opposite orbit parallax pass perihelion points polar circles pole position quadrature rays refraction remarkable represent revolution revolve right ascension ring rise rotation satellites Saturn seen sidereal sidereal day situated solar days solar system solstice sphere spots straight line sun's place superior conjunction superior planet supposed synodic period telescopic appearance tides tion twilight Uranus velocity Venus viewed visible Zodiacal