Fourteen Weeks in Descriptive Astronomy |
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Page 186
... ring is of a grayish tint ; the middle one is the most brilliant and is more luminous than Sat- urn itself ; the ... ring ... Breadth of exterior ring ... Miles . 173,500 10,000 Diameter of middle ring .. 150,000 Breadth of middle ring ...
... ring is of a grayish tint ; the middle one is the most brilliant and is more luminous than Sat- urn itself ; the ... ring ... Breadth of exterior ring ... Miles . 173,500 10,000 Diameter of middle ring .. 150,000 Breadth of middle ring ...
Page 282
... ring of condensed vapor . Centuries elapsed , and again , un- der the same conditions , a second ring was detached . Thus , one by one , concentric rings were separated from the parent nebula , all revolving in the same plane and in the ...
... ring of condensed vapor . Centuries elapsed , and again , un- der the same conditions , a second ring was detached . Thus , one by one , concentric rings were separated from the parent nebula , all revolving in the same plane and in the ...
Page 283
... rings did not break up , and so condense into globes , but still remain as rings which revolve about the planet . * Mitchell naïvely remarks , " Saturn's rings were left un- finished to show us how the world was made . " The ring which ...
... rings did not break up , and so condense into globes , but still remain as rings which revolve about the planet . * Mitchell naïvely remarks , " Saturn's rings were left un- finished to show us how the world was made . " The ring which ...
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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