Nebra sky disk. Artwork of a Bronze Age artefact known as the Nebra sky disk. Made of bronze and inlaid with gold, this object is around 30 centimetres across. It was found in Germany and is thought to date to around 1600 BC. The gold symbols are thought to represent the Sun (left), a Crescent Moon (right), and the stars (dots). The two arcs at left and right represent the angles between the rising of the Sun at the solstices, and the arc at bottom may represent the barge of the Sun, or the Milky Way. The disc is now kept in the Saxony-Anhalt State Museum for Prehistory, Germany.