Student's Class Book of Astronomy

Aberration of Light angle angular aphelion apparent diameter appear astronomers atmosphere attraction body bright called celestial celestial pole centre circle Class-Book colours comet constellation describe direction earth Earth's Axis earth's orbit earth's rotation Earth's Shadow east equal equator equinoctial fall globe greater greatest half heavens hemisphere Hipparchus horizon Inferior Planets Jupiter known latitude length less Lesson 28 Libration light Longitude Lunar Eclipse magnitude masses mean distance Mercury meridian Meteors minutes moon moon's distance moon's orbit move nearly Nebula node Noon observed Parallax passes perihelion planetary planets polar pole Pole-star portion position Precession radius rays revolution Right Ascension round the earth round the sun Satellites Saturn seen Sidereal Day Solar Day solar disc solar eclipses Spectrum sphere Spots stars sun and moon Sun-Spots sun's apparent sun's distance Superior Planets surface Synodic Period telescope tion Umbra Uranus vary velocity Venus Vernal Equinox visible Zenith