Blowing Antibubbles In Zero Gravity Is As Fascinating As It Sounds

International Space Station Expedition 30 astronaut Don Pettit injects air bubbles inside a sphere of water to demonstrate physics in space for ‘Science off the Sphere.’

They’re calling these “anti-bubbles” – i.e., air bubbles inside a bubble of water so that you’re left with an outer right of water.

Hard to explain, awfully cool.