I’ve always found it fascinating watching slow motion videos of water balloons.

Isn’t that cool? Because the water has to overcome inertia, inertia is proportional to mass, and water has a reasonably high density, it takes a moment for the water to realise it’s falling. Of course, it’s barely a split second of actual time, but in slow motion it’s pretty amazing to watch.

So when I discovered this video (made by Don Pettit on board the ISS) of bursting water balloons in zero gravity, I thought it was absolutely incredible.

Interesting too, how water in zero gravity behaves much like the molten wax in a lava lamp…