1. A hammer symbol that Heathens and
Asatruar wear about their necks to show their dedication to their God, Thor; much like Christians wear a cross.
Thor’s Hammer is called Mjolnir, and it is His weapon of choice which he uses to smite evil giants. It strikes lighting and roars with thunder when it is used and always returns to His hand. However, it also symbolizes regeneration, and not merely destruction and was often used at wedding to bless the bride and such.
2. On Stargate SG-1, Thor’s Hammer is a device that the Asgard set up to protect the people of
Cimmeria from Goa’uld interference.