Friday Fun: Plop Plop, Fizz Fizz…in Zero-G

During his 340-day-long One-Year Mission in 2015-2016 NASA astronaut Scott Kelly conducted—and was the subject of—countless experiments on the effects of long-duration space travel aboard the ISS. But he did manage to have a little fun too; the video above shows what happens to a blob of water free-floating in microgravity (that’s the technical term for zero-g in orbit) when Kelly adds some food coloring and a piece of Alka-Seltzer. The results are interesting to say the least as well as quite beautiful…be sure to watch in high-definition to catch the castoff watery “meteors!”

Learn more about the One-Year Mission here (and h/t to Aeon Magazine editor Corey Powell for the video!)