The House of Wisdom (Bayt al-Hikma) in Baghdad reached its zenith around 832 CE during Caliph al-Ma'mun's reign, expanding from a library established by his father Harun al-Rashid. The institution served as center for the Translation Movement, where Muslim, Christian, and Jewish scholars translated Greek, Persian, and Indian texts into Arabic. Scholars including Muhammad ibn Musa al-Khwarizmi and translator Hunayn ibn Ishaq made contributions to astronomy, mathematics, medicine, chemistry, zoology, and geography. The House preserved ancient knowledge and produced new scholarship that later influenced European science, including concepts related to heliocentrism and planetary motion.