The Proto-Indo-European word *h₂stḗr
Word *h₂stḗr
Meaning star
See also Armenian: astł ‘star’
Old Norse: stjarna ‘star’
Hittite: ḫa-aš-te-er ‘star’
Avestan: star- ‘star’

Comments
Lat. stella, Gk. astēr, Gm. sterro/Stern, Eng. steorra/star, ON stjarna, Goth. stairno, Arm. astł/astġ/asdġ, Skr. tāras;stṛ bhis, Welsh seren, Toch. śre/śćirye, Kamviri ṛ âšto, Pers. /setāre, Osset. sthaly/, Hitt. šittar, Kurd. stérk/estére

Other words that might be of interest
*ĝheim- ‘snow, winter’, *méh₁-nōt ‘moon, month’, *nebʰ-o-, nebʰ-i- ‘cloud’, *sneigʷh- ‘snow’, *sneudh- ‘cloud, mist’, *séhₐul ‘sun’, *h₃meigh- ‘drizzle, mist’, *nébʰes- ‘mist, cloud, sky’, *(s)kand- ‘shine, glitter, moon’, *louksnehₐ- ‘moon’