恒星 こうせい かん宇宙 うちゅう せんだったら
kō seikan'uchūsendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 恒星間宇宙船

1. If it were an interstellar spaceship.; If it was an interstellar spaceship.

Tara Conditional