Before the 8th movie, it was pretty heavily implied that things in hyperspace didn’t really interact with things in real space. Hence the reason jumping into hyperspace was a way to escape from a fight you weren’t going to win.

Of course, 8th movie showed us that wasn’t the case, and not only can ships in hyperspace ram things in real space, but the results are devastating. Which actually makes the whole Deathstar thing incredibly stupid and not just obsolete, as a Deathstar is nothing but a big ass target for someone to ram a ship into while in hyperspace.