1 giug 200 anni a. C. - Invention of the Astrolabe
Descrizione:
This tool was used by astronomers and navigators to help them solve problems about the position of the Sun and other stars. It helped explorers figure out where they were.
Aggiunto al nastro di tempo:
Data:
1 giug 200 anni a. C.
Adesso
~ 2226 years ago