A bubble within a droplet within a bubble within a droplet in outer space

God I love this. It’s a water droplet experiment on the International Space Station in zero gravity:

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.

There’s a second video I’ve posted below showing a water droplet “orbiting” knitting needle in space.  Also way cool.

First the anti-bubble:

Then the water droplet orbiting the needle:


Follow me on Twitter: @aravosis | @americablog | @americabloggay | Facebook | Instagram | Google+ | LinkedIn. John Aravosis is the Executive Editor of AMERICAblog, which he founded in 2004. He has a joint law degree (JD) and masters in Foreign Service from Georgetown; and has worked in the US Senate, World Bank, Children's Defense Fund, the United Nations Development Programme, and as a stringer for the Economist. He is a frequent TV pundit, having appeared on the O'Reilly Factor, Hardball, World News Tonight, Nightline, AM Joy & Reliable Sources, among others. John lives in Washington, DC. .

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