At a glance
- Roles
- Astronomer
- Counted among
- Sunni
- Era
- Abbasid Fragmentation
- Region
- Levant & Iraq
- Review
- Draft Completeness 1/5 · Help complete it
Life in time
Place in the story
- ScholarTradition
Roles are dated and sourced; the museum describes the act and attributes the judgement.
Overview
Abu Ali Yahya ibn Ghalib ibn Muhammad al-Baghdadi al-Khayyat, known as Yahya al-Khayyat al-Falaki, an astronomer and astrologer of Baghdad from the third century AH. He was one of the students of Masha'allah. The encyclopedia Mawsu'at A'lam al-Ulama' wa al-Udaba' gives his death as 250 AH (864 CE), while the biographers differ on the date of his death 1.
The date of death needs an additional source.
People and things also explored
Sharaf al-Dawla's observatory at Baghdad· Qibla-finding by stars, winds, mountains and rivers· Sizes of the heavenly bodies· Distances of the heavenly bodies from the Earth· The seven climates· The second motion (the planets' own motion along the zodiac)· The first motion (diurnal rotation of the heavens)· The solstices
Sources
- Mawsu'at A'lam al-Ulama' wa-l-Adaba' al-Arab wa-l-Muslimin — Dar al-Jil / ALECSO
Cite this page
islam.museum contributors. “Yahya al-Khayyat al-Falaki Abu Ali Yahya ibn Ghalib”. islam.museum, https://islam.museum/en/person/yahya-al-khayyat-al-falaki-abu-ali-yahya-ibn-ghalib/. CC BY-SA 4.0. Last updated 2026-10-16.