Kaseki's efforts to build the science vessel Perseus hit a roadblock when he realizes that it's impossible to get all the parts to fit in practice.
We may never return.
.قد لا نعود مجدّدًا
Womöglich werden wir
nie zurückkehren.
Tal vez no regresen.
Tal vez no regreséis.
Peut-être même sans retour
Potremmo non fare mai ritorno!
Podemos jamais voltar.
Мы можем и не вернуться.