οὐρανός :
heaven, i. e. the skies, above and beyond the αἰθήρ, Il.
2.458; and penetrated by the peaks of Mt. Olympus, the home
of the gods, hence (θεοὶ ἀθανατοὶ)
τοὶ οὐρανὸν εὐρὺν ἔχουσιν, Od. 1.67, etc. The epithets χάλκεος, σιδήρεος, etc., are figurative,
Il. 17.425, Od. 15.329.