Nyx in Wikipedia

In Greek mythology, Nyx (Νύξ, "night", Nox in Roman translation) was the primordial goddess of the night. A shadowy figure, Nyx stood at or near the beginning of creation, and was the mother of personified gods such as Hypnos (sleep) and Thánatos (death). Her appearances in mythology are sparse, but reveal her as a figure of exceptional power and beauty...

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