It's been a while since I've played Battlespace or Aerotech,(Read this in Centurion) but the interface-zone, on the map-sheets for a low gravity world should be higher up, than on a world with normal gravity. I know, this probably won't effect your games, like, at all, but mine, I use weird-worlds. There's less gravity, so the atmosphere is higher up.
I would also suggest that what we felt was our understanding of physics was actually a slight misunderstanding.
Edit - This is actually not to be a smartass, but in the Immanuel Cant tradition, I firmly believe the we cannot *Fully* know or understand the universe around us with only our five senses.
I took a quarter of Kant in college, taught by a Swiss with a heavy German-accent: I don't remember a thing.
I was indirectly quoting from the Ambrose's
Devil's Dictionary: "Logic: understanding the world though human misunderstanding; if one man can dig a hole in an minute, then 60-men can dig a hole in a second".