ごく ちょう新星 しんせいじゃなかったです
gokuchōshinseijanakattadesu

Noun
Desu Copula

The polite, past negative form of 極超新星

1. Wasn't an extremely bright supernova.; Wasn't a hypernova.

Past/Perfective
Negative
Polite
Casual Register
Astronomy