Everything is more complicated in space, including heartburn. Astronauts on the International Space Station filmed the process of dissolving an effervescent tablet (like an Alka-Seltzer antacid), showing how the fizzy liquid acts in microgravity.

Instead of mixing neatly in a glass, the tablet fizzes inside the balls of floating liquid, creating a kind of contained storm in a bubble. The super high-definition footage was a test case for NASA's snazzy new RED camera, which is capable of recording in six times more detail than previous cameras on the ISS.

[h/t: io9]