Caelus

Caelus or Coelus was a god of the sky in Roman myth and theology, iconography, and literature (compare caelum, the Latin word for "sky" or "the heavens", hence English "celestial"). The deity's name usually appears in masculine grammatical form when he is conceived of as a male generative force, but the neuter form Caelum is also found as a divine personification.

The name of Caelus indicates that he was the Roman counterpart of the Greek god Uranus (Οὐρανός, Ouranos), who was of major importance in the theogonies of the Greeks. Varro couples him with Terra (Earth) as pater and mater (father and mother), and says that they are "great deities" (dei magni) in the theology of the mysteries at Samothrace. Although Caelus is not known to have had a cult at Rome, not all scholars consider him a Greek import given a Latin name; he has been associated with Summanus, the god of nocturnal thunder, as "purely Roman."

Caelus begins to appear regularly in Augustan art and in connection with the cult of Mithras during the Imperial era. Vitruvius includes him among celestial gods whose temple-buildings (aedes) should be built open to the sky. As a sky god, he became identified with Jupiter, as indicated by an inscription that reads Optimus Maximus Caelus Aeternus Iup<pi>ter.

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