| Answer | Crossword Clue |
|---|---|
| astrogeology | the study of extraterrestrial geology |
| astrogeologies | ASTROGEOLOGY, the study of extraterrestrial geology |
| exobiology | the study of extraterrestrial life |
| exobiologies | EXOBIOLOGY, the study of extraterrestrial life |
| photogeology | a branch of geology concerned with the identification and study of geological features through the study of aerial or orbital photographs |
| photogeologies | PHOTOGEOLOGY, a branch of geology concerned with the identification and study of geological features through the study of aerial or orbital photographs |
