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When Tycho Brahe made his memorable investigations into the places of the stars, he had no telescopes to help him. The famous instruments at Uraniborg were merely provided with sights, by which the telescope was pointed to a star on the same principle as a rifle is sighted for a target. Shortly after Tycho's time, Galileo invented the telescope.
Then it was that he burst forth in his memorable rhapsody: "What I prophesied twenty-two years ago, as soon as I discovered the five solids among the heavenly orbits, what I firmly believed long before I had seen Ptolemy's harmonics, what I had promised my friends in the title of this book, which I named before I was sure of my discovery, what sixteen years ago I urged as a thing to be sought, that for which I joined Tycho Brahe, for which I settled in Prague, for which I have devoted the best part of my life to astronomical contemplation, at length I have brought to light, and have recognized its truth beyond my most sanguine expectations.
Over the gate-arch there is, even to this day, a watch-tower; and all along the sides of the castle ran sentry-galleries, and in the corners stood towers with walls a metre thick. Yet the castle had not been erected in the most savage war time; for Jens Brahe, who built it, had also studied to make of it a beautiful and decorative ornament.
"As the other philosopher, Tycho Brahe, found inspiration in the gibberish of his idiot companion, so do I find food for reflection in thy casual courtesy, my friend. Possibly I have reached the highest point of all my greatness, and from that full meridian of my glory, I haste now to my setting.
In Alexandria the memory of the illustrious old times was to be recalled by the discovery of the motion of the sun's apogee by Albategnius, and the third inequality of the moon, the variation, by Aboul Wefa; to be discovered six centuries later in Europe by Tycho Brahe.
Brahe, who made the plant, positively asserted that it had not been interfered with, and Howitt, therefore, wisely declined to burden himself with an additional weight of stores for which he had no present use.
The honor, in Kepler’s case, was that of the accurate, patient, and toilsome calculations by which he compared the results that followed from his different guesses, with the observations of Tycho Brahe; but the merit was very small of guessing an ellipse; the only wonder is that men had not guessed it before, nor could they have failed to do so if there had not existed an obstinate a priori prejudice that the heavenly bodies must move, if not in a circle, in some combination of circles.
Invited to Prague in 1600 by Tycho Brahe, as Assistant Royal Astronomer, he had access to the superb series of observations which Tycho had been accumulating for twenty-five years. Endowed with a genius for observation unsurpassed in the annals of science, the noble Dane had obtained a grant from the king of Denmark of the island of Hven, at the mouth of the Baltic.
The Landgrave of Hesse was a practical astronomer, who produced a catalogue of fixed stars which has been compared with that of Tycho Brahe. He was assisted by Rothmann and by Justus Byrgius. Maestlin, the preceptor of Kepler, is reputed to have been the first modern observer to give a correct explanation of the light seen on portions of the moon not directly illumined by the sun.
The young Countess of Brahe, the daughter of a subject, had gained his early affections, and he had resolved to share with her the Swedish throne.
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