F-Yeah, Science: "Of course, what we're seeing here is salvation to zero-gravity heartburn"

What happens when you add an Alka-Selter tablet to a sphere of water under micro-gravity?

(March 22, 2003) — 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.