NASA released 4K video of astronauts aboard the International Space Station experimenting with water, antacid and food coloring to create incredible, fizzing aqueous spheres in the zero-G environment. The ISS crew captured the footage with a Red Epic Dragon camera, which NASA is evaluating for use in monitoring scientific experiments, celestial phenomena and and vehicle operations. According to the space agency, this is among the first such footage of its kind. We can only hope it won't be the last.