An ancient astronomical instrument designed to measure and map positions of celestial objects and determine locations on Earth based on star observations.
From Greek kosmos (universe) + labe (that which grasps/takes hold). This specialized instrument name combines the concept of grasping or capturing cosmic measurements, used by medieval astronomers and navigators.
A cosmolabe is like a ancient GPS system—sailors and astronomers used it to 'grab' the positions of stars and convert that into latitude and longitude. It's a brilliant example of how humans created tools to translate cosmic measurements into practical navigation.
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