Concept
The Nebra sky disc (Himmelsscheibe von Nebra, ˈhɪml̩sˌʃaɪbə fɔn ˈneːbra) is a bronze disc of around diameter and a weight of , 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 or simply as a symbol for star clusters). Two golden arcs along the sides, interpreted to mark the angle between the solstices, were added later. A final addition was another arc at the bottom with internal parallel lines, which is usually interpreted as a solar boat with numerous oars, though some authors have also suggested that it may represent a rainbow, the Aurora Borealis, or a comet. The disc was found buried on the Mittelberg hill near Nebra in Germany. It is dated by archaeologists to 1800–1600 BCE and attributed to the Early Bronze Age Unetice culture. Various scientific analyses of the disc, the items found with the disc, and the find spot have confirmed the Early Bronze Age dating. The Nebra sky disc features the oldest concrete depiction of astronomical phenomena known from anywhere in the world. In June 2013, it was included in the UNESCO Memory of the World Register and termed "one of the most important archaeological finds of the twentieth century." The disc, together with two bronze swords, two sets of remains of axes, a chisel, and fragments of spiral armbands were discovered in 1999 by Henry Westphal and Mario Renner while they were treasure-hunting with a metal detector. The detectorists were operating without a license and knew their activity constituted looting and was illegal. Archaeological artefacts are the property of the state in Saxony-Anhalt. They damaged the disc with their spade and destroyed parts of the site. The next day, Westphal and Renner sold the entire hoard for 31,000 DM to a dealer in Cologne. The hoard changed hands, probably several times, within Germany during the next two years, being sold for up to a million DM.
