IPA: /ˈplænɪtəˌlɒdʒɪst/
KK: /ˈplænɪtəˌlɒdʒɪst/
A scientist who studies planets, including their composition, atmosphere, and potential for supporting life.
The planetologist presented her findings on the surface of Mars at the conference.
Planetologist → It is formed from "planet" (from Greek "planētēs", meaning wanderer) and "-ologist" (from Greek "logia", meaning study or discourse). The word "planetologist" refers to someone who studies planets, particularly their formation, composition, and behavior.
Think of a 'wanderer' ('planet') being studied ('-ologist') — that's what a planetologist does, they study the wandering bodies in space.