Asgard is a fiction realm within the Marvel Comics universe based on the Asgard of Norse mythology and is home to the Asgardians and other beings of Norse mythology. Asgard features prominently in tales of Thor.
According to Asgardian legend in the beginning there was nothing but in time two worlds came into being on opposite sides of the void. The one to the north was named Niflheim, a world of clouds and shadows in whose center surged the fountain Hvergelmir from which flowed twelve rivers of ice. The one to the south was named Muspelheim which teemed with rivers of fire. Eventually the warm air from the south carved out the frost giant Ymir from the ice in the north. Ymir became the father of all the giants and his cow Auðumbla licked out of the ice the first Asgardian, Buri. Buri had a son named Borr who married the giantess Bestla. Borr and Bestla had three sons named Odin, Vili and Ve, who were known as the Æsir. Odin and his brothers grew to hate the giants and slew Ymir and his blood formed a great sea. Odin and his brothers then raised Ymir's body from the sea and created Midgard, the middle between Niflheim and Muspelheim. With Ymir's bones they created mountains and with his hair they created trees. They then raised Ymir's skull upon four pillars to create the heavens. Within the skull contained sparks from Muspelheim which became the sun, moon and stars. When Midgard was complete Odin and his brothers created a home for themselves above it called Asgard. Between the two worlds they streched a rainbow bridge and called it Bifröst.
It was prophesied that Odin's son Loki would lead Asgard's enemies in a final conflict known as Ragnarök that would lead to its destruction. This comes to pass when Loki obtains the forge that created Mjolnir and creates new uru hammers for his army. The entirety of Asgard and its inhabitants are destroyed in resulting battle.
After Ragnarök Donald Blake awakens Thor from the "Void of Non-Existance". Thor returns to Earth and rebuilds Asgard outside of Broxton, Oklahoma, purchasing the land with gold from the treasury. Thor then goes about restoring the Asgardians who have been reborn in the bodies of mortal men and women.
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