IPA: /kɒzˈmɒɡənɪst/
KK: /kɒzˈmɒdʒɪnɪst/
A person who studies the origin and development of the universe.
The cosmogonist presented a fascinating theory about the creation of galaxies.
Cosmogonist → It is formed from "cosmos" (from Greek "kosmos", meaning universe or order) and "gonist" (from Greek "gonia", meaning origin or birth). A cosmogonist is someone who studies the origin or creation of the universe.
Think of 'cosmos' as the universe and 'gonist' as someone who studies origins — a cosmogonist is someone who explores the beginnings of the universe.
No commonly confused words.