A group of German scientists has deciphered the meaning of one of the most spectacular archeological discoveries in recent years: The mystery-shrouded sky disc of Nebra was used as an advanced astronomical clock.

The purpose of the 3,600 year-old sky disc of Nebra, which caused a world-wide sensation when it was brought to the attention of the German public in 2002, is no longer a matter of speculation.

A group of German scholars who studied this archaeological gem has discovered evidence which suggests that the disc was used as a complex astronomical clock for the harmonization of solar and lunar calendars.

"This is a clear expansion of what we knew about the meaning and function of the sky disc," said archeologist Harald Meller.