天体 てんたい分光 ぶんこう じゅつじゃありませんでした
tentaibunkōjutsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 天体分光術

1. Was not astrophysics.; Was not astronomical spectroscopy.

Past/Perfective
Negative
Polite
Terminal Form