ちょう巨大 きょだいブラックホールだったら
chō kyodai burakkuhōrudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 超巨大ブラックホール

1. If it were a supermassive black hole; If it's a supermassive black hole

Tara Conditional
Astronomy