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Updated: June 7, 2025
It even became so brilliant as to be visible in full daylight, since, its position being circumpolar, it never set in the latitude of Northern Europe. Finally it began to fade, turning red as it did so, and in March, 1574, it disappeared from Tycho's searching gaze, and has never been seen again from that day to this. None of the astronomers of the time could make anything of it.
In fact, it seems very closely to have resembled Tycho's star, not only in appearance and in the degree of its greatest brightness, but in the duration of its visibility. In the year 1670 a new star appeared in the constellation Cygnus, attaining the third magnitude. It remained visible, but not with this lustre, for nearly two years.
As illustrating the accuracy of Tycho's observations, it may be noted that he rediscovered a third inequality of the moon's motion at its variation, he, in common with other European astronomers, being then quite unaware that this inequality had been observed by an Arabian astronomer.
If that were true there would have been an apparition somewhere near the traditional date of the birth of Christ, a date which is itself uncertain. But even the data on which the assumption was based are inconsistent with the theory. Certain monkish records speak of something wonderful appearing in the sky in the years 1264 and 945, and these were taken to have been outbursts of Tycho's star.
They had not yet as many bases of speculation as we possess today. Tycho's star has achieved a romantic reputation by being fancifully identified with the ``Star of Bethlehem, said to have led the wondering Magi from their eastern deserts to the cradle-manger of the Savior in Palestine.
On 21st August, 1560, however, a solar eclipse took place, total in Portugal, and therefore of small proportions in Denmark, and Tycho's keen interest was awakened, not so much by the phenomenon, as by the fact that it had occurred according to prediction.
He discovered, also, the inequality in the inclination of the moon's orbit, and in the motion of her nodes. Tycho's powers of observation were not equalled by his capacity for general views. It was, perhaps, owing more to his veneration for the Scriptures than to the vanity of giving his name to a new system that he rejected the Copernican hypothesis.
Kepler's Birth in 1571 His Family And early Education The Distresses and Poverty of his Family He enters the Monastic School of Maulbronn And is admitted into the University of Tubingen, where he distinguishes himself, and takes his Degrees He is appointed Professor of Astronomy and Greek in 1594 His first speculations on the Orbits of the Planets Account of their Progress and Failure His "Cosmographical Mystery" published He Marries a Widow in 1597 Religious troubles at Gratz He retires from thence to Hungary Visits Tycho at Prague in 1600 Returns to Gratz, which he again quits for Prague He is taken Ill on the road Is appointed Tycho's Assistant in 1601 Succeeds Tycho as Imperial Mathematician His Work on the New Star of 1604 Singular specimen of it.
Alchemists and astrologers taught that the several planets were correlated in some mysterious manner with the several metals. It was, therefore hardly surprising that Tycho should have included a study of the properties of the metals in the programme of his astronomical work. An event, however, occurred in 1572 which stimulated Tycho's astronomical labours, and started him on his life's work.
An event, however, now occurred which threatened with destruction the interests of Danish science. In the beginning of April 1588, Frederick II. died in the 54th year of his age, and the 29th of his reign. His remains were conveyed to Rothschild, and deposited in the chapel under Tycho's care, where a finely executed bust of him was afterwards placed.
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