Oldest known astrolabe found in shipwreck

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/

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