Which early Islamic astronomer published notable star catalogs and contributed to astronomical knowledge?

• A. Al-Farabi
• B. Ibn Sina
• C. Al-Biruni
• D. Abd al-Rahman al-Sufi

Answer: (D)

Compiling a detailed star catalog and shaping how people understood the heavens is a hallmark of early Islamic astronomy, and Abd al-Rahman al-Sufi is the figure most closely associated with that achievement. He produced the Book of Fixed Stars, a landmark work that describes about a thousand stars, notes their brightness and positions, and presents sky maps showing how the constellations appear from the Islamic world. Al-Sufi didn’t just copy earlier lists; he revised them, added Arabic names, and refined the celestial descriptions, effectively bridging Greek-Ptolemaic traditions with medieval Islamic scholarship. His catalog and illustrations helped preserve and transmit astronomical knowledge across cultures and centuries, influencing later medieval astronomy in both the Islamic world and Europe. While the other figures contributed in philosophy, medicine, or broader science, they are not remembered primarily for publishing a star catalog in the way al-Sufi is.