Which Muslim scholar made significant contributions to astronomy, including precise measurements of the solar year?

Explanation

– Al-Battani made significant contributions to the field of astronomy, including remarkably precise measurements of the solar year and various other important astronomical calculations.
– His extensive astronomical observations and calculations significantly influenced later European astronomers, including figures such as Copernicus in subsequent centuries.
– For exams, remember that Al-Battani’s work built upon earlier astronomical traditions while introducing important refinements based on his own careful observations.