In Norse mythology, the Norns are figures responsible for fate. They are often depicted as three sisters—Urd (the past), Verdandi (the present), and Skuld (the future)—who weave the destinies of gods and humans alike. Their roles emphasize the notion of time and how it influences lives in the cosmos. The Norns' significance lies in their control over fate, illustrating how destiny is an essential theme within Norse beliefs.