A closer look
Building a star on Earth is hard enough without the nuclear fuel constantly trying to tear itself apart from the inside. Inside massive tokamak reactors like ITER, magnetic fields are used to squeeze plasma hotter than the sun, but this extreme heat automatically generates microscopic magnetic tornadoes. These turbulent eddies act like a leaky thermos, siphoning crucial heat away from the reactor core and aggressively challenging physicists who are just trying to keep the artificial sun from throwing a tantrum and cooling down.
