A High-school Astronomy: In which the Descriptive, Physical, and Practical are Combined : with Special Reference to the Wants of Academies and Seminaries of LearningMason Bros., 1857 - 240 páginas |
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adjoining cut angle angular aphelion apparent magnitude appear Asteroids astronomers atmosphere axis bodies called cause celestial Celestial Longitude circle comets concave constellations Describe diameter difference direction distance earth earth's orbit east eastward ecliptic equal equator equinoctial equinox figure fixed stars full moon globe heavens hemisphere Illustrate by diagram inclination Jupiter length light and heat longitude lunar magnitude Mars Mercury meridian miles minutes moon moon's orbit motion naked eye nebulous Neptune night nodes o'clock objects oblate obliquely observations opposite pass perihelion periodic revolution planetary planets pole principal stars Prof radius refracting telescope refraction Remark respect retrograde revolve right ascension rings satellites Saturn seasons seen shadow shown side solar day solar eclipse solar system sphere spots student sun and moon supposed surface synodic revolution tails telescope tide-wave tides tion transit Uranus velocity Venus vernal equinox visible zodiac zodiacal light