[Uri] has another video that goes over astrolabe basics and his design process that’s well worth watching too. While it’s nowhere near as complicated an instrument, this astrolabe puts us in ...

The discovery of an 11th-century Islamic astrolabe in Verona, Italy, has captivated historians and scientists alike. With ...

Thin engraved discs or paper could also be used between the sky disc and the astrolabe body. The instrument and its ...

Marine archaeologists say the object is an astrolabe, an instrument once used by mariners to measure the altitude of the Sun during their voyages. It is believed to date from between 1495 and 1500.

An astrolabe is an ancient scientific instrument that the Greeks used in the second century B.C. to determine the latitude at which they were located. The astrolabe, which allows the user to ...

What I'm holding is a portable model of the heavens, in the shape of an exquisite, circular brass instrument that looks a bit like a large brass pocket watch, and it's called an astrolabe.