Marine archaeologists have discovered the earliest known example of an astrolabe navigation tool. Once used by ancient mariners to determine the position of the Sun, the artefact was found in a shipwreck off the coast of Oman and dates back to between 1495 and 1500. Source: http://www.bbc.com/ Read here:https://helenastales.weebly.com/blogu… Follow us on facebook: https://www.facebook.com/ufo.maniaII/
