Our audio rule was “meaningful silence.” In the vacuum of space, sound doesn’t travel, so we considered the silence as our blank canvas. Every sound is diegetic—it comes from inside the cockpit or vibrates through the ship’s frame. The creak of the hull under pressure, the hiss of a seal, the warped crackle of a long-range message; all these sounds are filtered to seem like you’re hearing them from inside a helmet. The music score is used rarely, acting as an emotional nudge rather than a constant soundtrack. This range keeps the ears from getting tired and makes the loud, intense moments hit much harder.