Hmm.
I remember seeing 'fun' clips of 'nauts chasing small water bubbles around a cabin to show kids (and us kids at heart) how lack of gravity works.
Could they not release a bubble or two into each cabin/section or whatever and see where they 'gravitate' to?
Or doesn't it work that way?
Boffins would know ----------------------------------------------------------------------------------------^^
Biting the hand that feeds IT
