Post #40346

The astrolabe is an ancient scientific tool from the 6th century used to tell time and find the positions of the Sun and stars. Made of metal, it has parts like a base plate (mater), a rotating star map (rete), and a sighting rule (alidade). Mariners used it for navigation before sextants. It helped measure heights and find locations by observing the sky. 🧭🌟 [Source] [See also] @googlefactss #Astrolabe#Navigation#History#Science#Astronomy