Recreations in Astronomy

Almanac altitude angle aphelion appear Aries astronomers atmosphere attraction called celestial centre Ceres circle circumstance comet constellation dark density diameter direction disk distance Earth's orbit Earth's surface east equal equator fixed stars globe greater Greek heavenly bodies heavens Hence Herschel horizon illuminated surface immense inclined inferior conjunction inferior planet inhabitants Jupiter Latin latitude latter light and heat longitude luminous lunar lunar eclipse magnitude Mars means Mercury meridian millions of miles Moon's motion moves round nearer night nodes observed oval parallax pass period planet point of Aries poles portion position present Ptolemy rays refraction revolution revolve round right ascension ring rise rotation round the Earth round the Sun satellites Saturn seasons seen shadow side solar eclipse solar system spot summer Sun and Moon Sun-dial Sun's supposed telescope termed tides tion tropic Uranus velocity Venus visible zenith Zodiac ZODIACAL LIGHT