could happen
Un giorno potrebbe succedere qualcosa, ma ora sono qui!
One day something might happen, but for now I’m here!
— I guardiani del giorno (2006)
Io non so cosa potrebbe succedere.
I don't know what could happen.
Certo, non lo vorrei, ma potrebbe succedere anche a te e agli altri.
Of course, I wouldn't want that, but it could happen to you and others too.
— Solaris (1972)
Could it happen?
It could happen again.