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Updated: May 2, 2025
The periodic time of Uranus, the nature of Saturn's ring, and the occultation of Jupiter's satellites are as far removed from the concerns of mankind as the heliacal rising of Sirius, or the northern position of the Great Bear."
"The moon's pale beams" never afford material for a blank line in poetry; neither do scientific discussions rage on the formation of Saturn's rings, or the spots on the sun. They knew they occupied a hollow sphere, bounded North and South by impassible oceans. Light was a property of the atmosphere.
"Let us have the wine of Saturn's Bridge." The boys who served brought the wine in dull red jars that struck a charming note against their white robes. They poured out the violet and purple and golden wine with calm sweet faces as if they were assisting in the mysteries, without any sign that they heard the strange words that flashed from side to side.
It teaches you things like this: Saturn's negative hours are especially good for all matters relating to gold-mining..... The Sun negative rules the emerald, the musical note D sharp, and the number four. The lunar hours are a good time to deal in public commodities, and to hire servants of both sexes.....
"Ask," replied he. Quoth she, "Where is Saturn's dwelling-place?"; and he answered, "In the seventh heaven." Q "And that of Jupiter?" "In the sixth heaven." Q "And that of Mars?" "In the fifth heaven." Q "And that of the Sun?" "In the fourth heaven." Q "And that of Venus?" "In the third heaven." Q "And that of Mercury?" "In the second heaven." Q "And that of the Moon?" "In the first heaven."
Between Titan and Japetus the sixth and seventh reckoning outwards there was obviously room for another satellite. It was discovered on both sides of the Atlantic simultaneously, on the 19th of September, 1848. Mr. W. C. Bond, employing the splendid 15-inch refractor of the Harvard Observatory, noticed, September 16, a minute star situated in the plane of Saturn's rings.
De Sejour said that it was thrown off from Saturn's equator as a liquid ring, and afterwards solidified. He noticed that the outside would have a greater velocity, and be less attracted to the planet, than the inner parts, and that equilibrium would be impossible; so he supposed it to have solidified into a number of concentric rings, the exterior ones having the least velocity.
Compare the periods of rotation on their respective axes, and we find no correspondence, no indication that the revolving motion was imparted to all by one inflexible law. The first four planets, counting from the sun, perform their rotation in nearly the same time, namely, twenty-four hours. But Jupiter's period is a little less, and Saturn's a little more, than ten hours.
James E. Keeler demonstrated with the spectroscope, by means of the Doppler principle, already explained in the chapter on Venus, that the rings circulate about the planet with varying velocities according to their distance from Saturn's center, exactly as independent satellites would do.
Do you see how the landscape is spreading out round us? That means that we are dropping pretty fast. Whereabouts would you like to land? At present we're heading straight for Saturn's north pole." "I think I'd rather see what the rings are like first," said Zaidie; "couldn't we go across them?" "Certainly we can," he replied, "only we'll have to be a bit careful." "Careful, what of collisions?
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