The Latin word caelestis
Word caelestis
Meaning heavenly, celestial

Other words that might be of interest
sol ‘sun’, luna ‘moon’, stella ‘star’, nubes ‘cloud’, nebula ‘cloud’, cālīgō ‘fog’, tenebrae ‘fog’, caelum ‘sky, heaven, vault of heaven’, nix ‘snow’, astrum ‘star, constellation’