An ancient and medieval instrument used to measure the positions of stars and planets, and to solve problems in trigonometry and navigation.
From Arabic 'asṭurlāb,' meaning 'star-taker,' combining 'astro-' (star) + 'laб-' (to take/seize). Invented by Greek astronomers and perfected by Islamic scholars before being transmitted to Europe.
The astrolabe was essentially the iPhone of the medieval world—a sophisticated multi-tool that could tell you your latitude, the time, stellar positions, and when to pray, and scholars treated them like prized possessions!
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