The story
- Proto-Indo-European*h₂eHs-
- Proto-Indo-European*h₂stḗr
- Proto-Hellenic*astḗr
- Ancient Greekἀστήρ (astḗr)
- Ancient Greekᾰ̓́στρον (ắstron)
- Englishastro-
- Proto-Indo-European*gʷeyh₃-
- Ancient Greekβίος (bíos)
- Proto-Indo-European*leǵ-
- Proto-Indo-European*lóǵos
- Proto-Hellenic*lógos
- Ancient Greekλόγος (lógos)
- New Latinbiologia
- Englishbiology
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- Englishbiological
- English todayastrobiological
From astro- + biological.
Etymology from Wiktionary, CC BY-SA 4.0.