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The examination of the lunar disc is therefore highly favorable for the study of the great geological phenomena of our own globe. As certain astronomers have remarked, the Moon's surface, though older than the Earth's, has remained younger. That is, it has undergone less change.
For the definite discovery of the track in which these bodies revolve, we are indebted to the labours of Professor Adams, who, by a brilliant piece of mathematical work, completed the edifice whose foundations had been laid by Professor Newton, of Yale, and other astronomers.
The admiral glanced at his wrist chronom. "Pretty late, but I'll see." He had just reached for a switch when his call buzzer sounded, and when he activated the screen the planetographer reported, "We can't find any such system on our charts." Hanlon's spirit sank. "Keep looking!" he ordered. "Check with the astronomers. It's somewhere around there I just came from that planet.
Now when the three worshipful Kings who in that time reigned in Ind, Chaldee, and Persia were informed, by the astronomers, of this Star, they were right glad that they had grace to see the Star in their days.
When the extraordinary structure of these objects was first announced, the discovery was received with some degree of incredulity. Other astronomers looked at the same objects, and when they failed to discern and they frequently did fail to discern the spiral structure which Lord Rosse had indicated, they drew the conclusion that this spiral structure did not exist.
Although the strange figures which astronomers still allow to straggle over their star maps no longer have any real scientific interest, they still possess a certain charm, not only for the student of astronomy, but for many who care little or nothing about astronomy as a science.
These expectations were found to be premature. The movements of the satellites of Jupiter are not by any means so simple as the immortal inventor of the method of longitudes supposed them to be. It was necessary that three generations of astronomers and mathematicians should labour with perseverance in unfolding their most considerable perturbations.
In any other young man, indeed in any other man, this would have been a ridiculous flight of presumption. There have been thousands of better mathematicians, astronomers, chemists, physicians, botanists, mineralogists, than Bacon.
As surely as astronomers tell us that all this universe is hastening towards a central point, so surely 'that far-off divine event' is that 'to which the whole creation moves. It is the blaze of light which fills the distant end of the dim vista of human history.
Ever since Halley discovered that the comet of 1682 was a member of the solar system, these wonderful objects have had a new interest for astronomers; and a comparison of orbits has often identified the return of a comet, and led to the detection of an elliptic orbit where the difference from a parabola was imperceptible in the small portion of the orbit visible to us.
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