How would fizzy drinks behave in space?

Unfortunately, space soda is not a real thing as, without gravity, the carbon dioxide bubbles aren't buoyant so they remain in the liquid.

Asked by: Luke Anderson, Tonbridge

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Without gravity, there is no density gradient within the drink, so its bubbles float around randomly inside the liquid. Occasionally a bubble strikes another with enough force to overcome the surface tension and they merge, so over time the bubbles coalesce into a few large bubbles that squash the others into a sort of static foam.


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