The oldest known astrolabe was used on one of Vasco da Gama’s ships
A navigational device for taking altitudes at sea was found in a Portuguese shipwreck in the Arabian Sea and dates back...
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A 2,000-year-old tattoo tool is the oldest in western North America
The artifact is made of two pigment-stained cactus spines, and has been sitting in storage since its discovery in 1972.
