Arab Scholars - Blog Posts

🌌 PART I: The Arab Astrologers—Names You Must Know

📝Abū Maʿshar al-Balkhī-known in Latin as Albumasar

Born in Balkh (modern Afghanistan) in 787, a former hadith scholar who turned to the stars in midlife.

His Kitāb al-Madkhal al-Kabīr (The Great Introduction) became the bedrock of European astrology when translated into Latin.

He systematized planetary natures, zodiac signs, houses, aspects, and the elements.

His “conjunction theory” argued that history moves in great cycles, marked by rare celestial alignments—especially Jupiter-Saturn conjunctions, which he claimed heralded the rise of prophets and empires.

"All change under heaven is written first in the sky."

📜 Al-Kindi – The Philosopher of the Arabs

A polymath in the Abbasid court, blending Greek philosophy with Islamic theology and celestial theory.

In De Radiis Stellarum (On the Stellar Rays), he proposed a theory of stellar influence—not superstition, but a natural force, like light or magnetism.

He laid early groundwork for what would become natural philosophy (proto-science), suggesting stars transmit influence through rays affecting Earthly matter and human temperament.

🌍 Al-Biruni – The Observer from Khwarezm

Though more astronomer than astrologer, he cataloged astrology in full without ever endorsing its claims outright.

His Kitāb al-Tafhīm contains precise definitions of astrological terms, planetary motions, and how horoscopes are calculated.

A master of cultural synthesis: he compared Greek, Indian, and Persian systems, noting their commonalities and contradictions.

🕊 Abū al-Rayḥān al-Sijzī & Al-Zarqālī – Instruments of the Sky

Developed the astrolabe, armillary spheres, and zij tables—astronomical charts used by astrologers to pinpoint planetary positions with astonishing accuracy.

🪐 PART II: What the Arabs Contributed to Astrology

🧠 1. A Philosophical Foundation

Arabs didn’t just practice astrology—they thought about it. They debated whether the stars compel or merely incline.

Al-Farabi and later Avicenna argued the stars could only affect the body, not the soul—a blend of Neoplatonism and Islamic ethics.

The stars whisper, they do not command.

📊 2. Horoscopic Techniques Refined

Arabs inherited and enhanced horoscopic astrology from the Greeks:

Twelve Houses (Bayūt): Places in the chart signifying career, love, health, death.

Lots (Arabic Parts): Points calculated from planetary positions, like the Lot of Fortune and Lot of Spirit, used to fine-tune predictions.

Triplicities and Dignities: Systems to assess planetary strength.

Interrogations (Horary Astrology): Divining answers to specific questions, such as “Will I marry?” or “Will the king win this war?”

⚔️ 3. Political and Historical Astrology

Astrologers like Abū Maʿshar claimed that world events—plagues, conquests, religious shifts—were written in planetary cycles.

Used to time coronations, launch battles, found cities.

Caliphs would sometimes delay decisions until the astrologers said the heavens were "favorable."

🏥 4. Medical Astrology

Used zodiac signs to diagnose and treat illness—Aries rules the head, Pisces the feet, and so on.

Ibn Sina (Avicenna) himself, though skeptical of predictive astrology, used astrological charts for medical diagnoses, especially in fevers and crisis periods.

🌠 PART III: Astrology in Islamic Society

🌗 Religious Debate

The Qur’an warns against claims to know the unseen:

"Say: None in the heavens or on the earth knows the unseen except Allah." (Qur’an 27:65)

So Islamic scholars:

Allowed astronomy (for timekeeping, Qibla direction).

Permitted astrology only if used to understand natural rhythms—not fate.

Condemned fortune-telling or attributing independent power to stars.

Yet astrology persisted—not as dogma, but as courtly art, folk belief, and scientific curiosity.

🕯 PART IV: The Transmission to Europe

Translations of Arabic astrological texts into Latin via Toledo and Sicily reawakened Europe’s interest in the stars.

Terms like zenith, nadir, azimuth, almanac, and even algorithm come from Arabic.

Albumasar, Albohali, Messahala—all Arabic astrologers Latinized into the canon of European learning.

The Renaissance astrologers (like Ficino and Agrippa) drank deeply from Arab wells.

🌌 In Closing: A Legacy Like the Night Sky

The Arabs did not merely gaze at the stars—they listened to them, charted them, debated them, and passed on their wisdom in tomes that still echo today. Astrology, as they practiced it, was never just fortune-telling—it was philosophy, poetry, medicine, and mathematics entwined in a cosmic dance.