Yeah, even in space movies and shows with lauded "realism" there is still sound, it's just heavily muted. I like it, but it's still not actually realistic. I like the implication that it's what it would sound like if the camera were encased in a module with air, or if the microphone(s) were mounted in the ship(s) and that's what it would sound like, but it's still not what it would sound like.