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Its beauty and merit were officially recognised by the award of the Astronomical Society's Gold Medal in 1884. A second picture of equal merit, obtained by the same means, February 28, 1883, with an exposure of one hour, is reproduced in the frontispiece. The vignette includes two specimens of planetary photography.
These experiments will become more interesting when travellers shall have determined anew, at intervals of forty or fifty years, some of those changes which the celestial bodies seem to undergo, either at their surface or with respect to their distances from our planetary system.
He concludes nothing against it, and, what perhaps tells with more weight in the long run, has nothing to substitute for it. In one form or the other, if we speculate at all on the development of the planetary system, our speculations are driven into conformity with the broad lines of the Nebular Hypothesis to the extent, at least, of admitting an original material unity and motive uniformity.
We of to-day, thanks to Keppler and his followers, know that the earth and the other planetary bodies in their circuit about the sun describe an ellipse and not a circle.
It hadn't been done. Calhoun fumed to himself. The world of Weald Three grew brighter and brighter and became a disk. The disk had ice-caps and a reasonable proportion of land and water surface. The Med Ship decelerated, and voices notified observation from the surface, and the little craft came to a stop some five planetary diameters out from solidity.
My ardor for Shakespeare must have been at its height when I was between sixteen and seventeen years old, for I fancy when I began to formulate my admiration, and to try to measure his greatness in phrases, I was less simply impassioned than at some earlier time. At any rate, I am sure that I did not proclaim his planetary importance in creation until I was at least nineteen.
"I did not like that expression of yours, planetary foundlings," said the Mistress. "It seems to me that it is too like atheism for a good Christian like you to use."
But he knew from previous calculations that this might easily be due to planetary perturbations. Finally, he arrived at the conclusion that all of these comets were identical, travelling in an ellipse so elongated that the part where the comet was seen seemed to be part of a parabolic orbit. Once again Halley's suggestion became an inspiration for the mathematical astronomer.
It should be added, however, that he accepted that part of the Copernican theory which makes the sun the centre of all the planetary motions, the earth being excepted. He thus developed a system of his own, which was in some sort a compromise between the Ptolemaic and the Copernican systems.
There are few prettier things than Carlsbad by night from one of the many bridges which span the Tepl in its course through the town. If it is a starry night, the torrent glides swiftly away with an inverted firmament in its bosom, to which the lamps along its shores and in the houses on either side contribute a planetary splendor of their own.
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