The Old Norse word stjarna
Word stjarna
s t j a r n a
Meaning star
See also Proto-Indo-European: *h₂stḗr ‘star’
Hittite: ḫa-aš-te-er ‘star’
Avestan: star- ‘star’

Other words that might be of interest
mold ‘cloud’, himinn ‘heaven’, máni ‘moon’, sól ‘sun’, sunna ‘sun’