Al-Battani
He made significant improvements to Ptolemy's astronomical tables and accurately determined the length of the tropical year.
Most quoted
"Our fleeting existence on Earth is but a moment compared to the eternal cycles of the cosmos. Yet, in this brief span, we are granted the capacity to observe and understand."
— from Kitāb az-Zīj as-Sābi'
"The beauty of the night sky, with its countless luminaries, is a testament to the artistry of the divine, an invitation to contemplation and wonder."
— from Kitāb az-Zīj as-Sābi'
"The celestial spheres, in their intricate dance, reveal the order and majesty of the Creator. To study them is to glimpse the divine mind at work."
— from Kitāb az-Zīj as-Sābi'
All quotes by Al-Battani (382)
Our work aims to improve upon the foundations laid by the ancient Greek astronomers.
The use of the sine function is crucial for solving problems in spherical trigonometry.
We have observed that the longitude of the sun's apogee is not fixed, but slowly changes over time.
The accurate prediction of lunar phases is important for religious observances.
The study of the stars elevates the mind and brings one closer to the understanding of God's creation.
We have provided a more accurate value for the duration of the synodic month.
The construction of precise astronomical instruments is as important as the observations themselves.
The variations in the length of daylight throughout the year are a direct consequence of the Earth's axial tilt.
Our tables allow for the calculation of planetary positions for any given time and place.
The pursuit of knowledge in astronomy is a continuous journey, with each generation building upon the work of the last.
The accurate determination of geographical coordinates relies heavily on astronomical observations.
We have demonstrated the superiority of our methods over those of Ptolemy in several instances.
The study of the celestial sphere is a gateway to understanding the vastness and complexity of the universe.
The use of a gnomon is a simple yet effective way to measure the sun's altitude and determine the time.
We have provided a detailed explanation of the theory of trepidation, though our observations suggest a different model.
The true measure of a scholar is their dedication to truth and their willingness to challenge established beliefs.
The accurate calculation of the time of prayer depends on precise astronomical data.
Our work includes a comprehensive star catalog, with updated positions and magnitudes.
The understanding of the cosmos is a journey of discovery, not a destination.
We have refined the methods for determining the visibility of the new moon.