Alka-Seltzer in Space

[Susano]

What do you get when you add Alka-Seltzer to a spherical water drop in microgravity?

Expedition Six NASA ISS Science Officer Don Pettit performs a series of microgravity experiments with water spheres and effervescent antacid tablets. In the second of four videos, Pettit inserts a tablet into a 50-millimeter sphere and observes the fizzy results.

http://www.youtube.com/watch?v=bgC-ocnTTto

[BobGreenwade]

Very fascinating.

The formation of two huge bubbles and scores of tinier ones might have some interesting applications in cosmology. I'm not quite sure what those applications might be, though.