MARINER’S FRIEND A metal disk found at a shipwreck site near Oman is the oldest known mariner’s astrolabe, a device for navigating at sea. While searching for shipwreck remains near Oman in the Arabian Sea in 2014, divers discovered an unusual metal disk that has since proven to be […]

Cliquez ici pour lire la suite The oldest known astrolabe was used on one of Vasco da Gama’s ships