RichThesaurus
the vault of heaven
the vault of heaven
synonyms
the welkin
the heavens
the firmament
the upper regions
the empyrean
the sphere
the ether
the azure
the blue
airspace
the stratosphere
the skies
sky
the (wide) blue yonder
the wide blue yonder
the atmosphere
atmosphere
aerosphere
the upper atmosphere
the celestial sphere
the sky
air
the vault of heaven
definitions