| Part of speech | unknown part of speech |
|---|
| Nominative | astronomio |
|---|---|
| Accusative | astronomion |
| Czech | astronomie |
|---|---|
| Danish | astronomi |
| Dutch | astronomie; sterrenkunde |
| English | astronomy |
| French | astronomie |
| German | Astronomie; Himmelskunde; Sternkunde; Sternforschung |
| Greek | αστρονομία |
| Latin | astrologia; astronomia |
| Luxemburgish | Astronomie |
| Papiamento | astronomia |
| Portuguese | astronomia |
| Russian | астрономия |
| Saterland Frisian | Astronomie; Heemelskunde; Stiernkunde |
| Spanish | astronomía |
| Swedish | astronomi |
| Turkish | astronomi |
| Welsh | seryddiaeth |
| West Frisian | astronomy |