JET

JET (Joint European Torus) is a large experimental device in the UK that studies nuclear fusion, the process powering the sun. It uses powerful magnetic fields to contain and heat a super-hot plasma—a state of matter where atoms are ionized—so that nuclei can collide and fuse, releasing large amounts of energy. The goal is to understand how to sustain fusion reactions efficiently on Earth, which could provide a nearly limitless, clean energy source in the future. JET is a leading experiment in fusion research, helping scientists learn how to develop practical fusion power plants.