@CNN: Researchers from England discovered what is now considered to be the world’s oldest astrolabe — used in the 1500s by famed explorer Vasco da Gama https://t.co/PgaOjbjs8w https://t.co/WPaLGXqFBJ

@CNN: Researchers from England discovered what is now considered to be the world’s oldest astrolabe — used in the 1500s by famed explorer Vasco da Gama https://t.co/PgaOjbjs8w https://t.co/WPaLGXqFBJ