Fourteen Weeks in Descriptive Astronomy |
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Page 79
... planet at L is said to be in opposition to the sun . It is then at its greatest distance from him- 180 ° . The planet is on the meridian at midnight while the sun is on the corresponding meridian on ... planet the less it THE PLANETS . 79.
... planet at L is said to be in opposition to the sun . It is then at its greatest distance from him- 180 ° . The planet is on the meridian at midnight while the sun is on the corresponding meridian on ... planet the less it THE PLANETS . 79.
Page 81
... planet would come into conjunction twice in each revolution . Since , however , the earth is in motion , it follows ... PLANETS AS EVENING AND MORNING STARS . - The in- THE PLANETS . 81.
... planet would come into conjunction twice in each revolution . Since , however , the earth is in motion , it follows ... PLANETS AS EVENING AND MORNING STARS . - The in- THE PLANETS . 81.
Page 319
... planet . Its retrograde motion . Must a superior planet al- ways be seen in the same part of the sky as the sun ? 80. Which retrogrades more , a near or a distant planet ? Define a sidereal and a synodic revolution of an inferior and a ...
... planet . Its retrograde motion . Must a superior planet al- ways be seen in the same part of the sky as the sun ? 80. Which retrogrades more , a near or a distant planet ? Define a sidereal and a synodic revolution of an inferior and a ...
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Common terms and phrases
ancients angle aphelion appear astronomers atmosphere axis bright brilliant called Capricornus Cassiopeia Celestial Sphere centre circle color comet conjunction constellation Cor Caroli dark density diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light longitude luminous lunar magnitude Mars mean distance measured Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune night node north pole obliquity observer orbit parallax pass path penumbra perihelion Perseus planet polar position rays revolve Right Ascension ring rotation satellites Saturn seasons seen shadow shine side sidereal sidereal day solar system space spots summer sun's superior planet supposed surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major varies velocity Venus vernal equinox visible zenith zodiac