[Ethan Clive Osgoode]

Indeed, they created the astrolabe-

The astrolabe was invented by the Greeks.

[RayChuang88]

While the Greeks invented the astrolabe, it was the Arabs that really put it to good use. Trying to find the direction of Mecca proved to be a huge boon for improving the quality of mapmaking, easing travel through the unending sand dunes of the Sahara and the Arabian Peninsula.