Planispheric astrolabe from Persia, an ancient astronomical computer for solving problems relating to time and the position of the Sun and stars in the sky. Dated 11th Century

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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 11th, ancient, archival, archive, astrolabe, astronomical, astronomy, century, computer, historical, history, persia, persian, planispheric, problem, sky, stars, sun, time