系外 けいがい惑星 わくせいじゃありませんでした
keigaiwakuseijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 系外惑星

1. Was not an exoplanet.; It was not an exoplanet.

Past/Perfective
Negative
Polite
Terminal Form
Astronomy