Galaxies on Instagram: "The video shows a plasma pulse inside Tokamak Energy’s ST40 fusion device, recorded with a high-speed color camera running at about 16,000 frames per second. A tokamak uses powerful magnetic fields to confine plasma—superheated, electrically charged gas—in an attempt to achieve nuclear fusion. What looks like slow swirling motion in the footage is actually an extremely fast and violent process stretched out in time by the high-speed recording. The glowing shapes you see a