**1.**

Arabic astronomy's way was called Analemma, which is a way to calculate the Suns position from a fixed location.

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Arabic astronomy's way was called Analemma, which is a way to calculate the Suns position from a fixed location.

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Arabic astronomy came up with the concept of lemma, which is a way of representing the epicyclical motion of planets without using Ptolemic method.

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Arabic astronomy was aware that if the Earth rotated on its axis, this would be consistent with his astronomical parameters, but he considered this a problem of natural philosophy rather than mathematics.

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Arabic astronomy was unsuccessful in replacing Ptolemy's planetary model, as the numerical predictions of the planetary positions in his configuration were less accurate than those of the Ptolemaic model.

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Arabic astronomy contradicts the Aristotelian idea that there is a specific kind of dynamics for each world, applying instead the same dynamics to the sublunar and the celestial worlds.

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Arabic astronomy studied it in his youth, and in 1420 ordered the construction of Ulugh Beg Observatory, which produced a new set of astronomical tables, as well as contributing to other scientific and mathematical advances.

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Arabic astronomy's system spread through most of Europe during the 13th century, with debates and refutations of his ideas continued to the 16th century.

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Since the Tusi couple was used by Copernicus in his reformulation of mathematical Arabic astronomy, there is a growing consensus that he became aware of this idea in some way.

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Islamic influence on Chinese Arabic astronomy was first recorded during the Song dynasty when a Hui Muslim astronomer named Ma Yize introduced the concept of seven days in a week and made other contributions.

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Arabic astronomy was known as "Zhamaluding" in China, where, in 1271, he was appointed by Khan as the first director of the Islamic observatory in Beijing, known as the Islamic Astronomical Bureau, which operated alongside the Chinese Astronomical Bureau for four centuries.

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Arabic astronomy devoted his time to writing several books on his accomplishments and advancements with quadrants and geometrical problems.

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