The Nebra Sky Disc is an ancient artifact discovered in Germany in 1999. It is believed to be the oldest known representation of the cosmos, dating back to 1600 BC. The disc is made of bronze and is decorated with gold symbols that represent the sun, moon, and stars. It is
From Wikipedia
The Nebra sky disc is a bronze disc of around 30 cm (12 in) diameter and a weight of 2.2 kg (4.9 lb), having a blue-green patina and inlaid with gold symbols. These symbols are interpreted generally as the Sun or full moon, a lunar crescent, and stars, including a cluster of seven stars, axiomatically interpreted as the Pleiades.