The cosmos in Norse mythology consists of Nine Worlds that flank a central sacred tree, Yggdrasil. Most of the surviving mythology centers on the plights of the gods and their interaction with several other beings, such as humanity and the jötnar, beings who may be friends, lovers, foes, or family members of the gods.

The source texts mention numerous gods, such as the hammer-wielding, humanity-protecting thunder-god Thor, who relentlessly fights his foes the one-eyed, raven-flanked god Odin, who craftily pursues knowledge throughout the worlds and bestowed among humanity the runic alphabet the beautiful, seiðr-working, feathered cloak-clad goddess Freyja who rides to battle to choose among the slain the vengeful, skiing goddess Skaði, who prefers the wolf howls of the winter mountains to the seashore the powerful god Njörðr, who may calm both sea and fire and grant wealth and land the god Freyr, whose weather and farming associations bring peace and pleasure to humanity the goddess Iðunn, who keeps apples that grant eternal youthfulness the mysterious god Heimdallr, who is born of nine mothers, can hear grass grow, has gold teeth, and possesses a resounding horn the jötunn's son, the god Loki, who brings tragedy to the gods by engineering the death of the goddess Frigg's beautiful son Baldr and numerous other deities. The Tjängvide image stone with illustrations from Norse mythology.

Age of mythology norse units