Fusion experiment wows with a stylish exit after four decades.

TLDR: A 40-year-old nuclear fusion experiment called the Joint European Torus (JET) has recently closed down and ended its final run with a record-breaking performance. The experiment, which used a tokamak reactor, achieved 5.2 seconds of continuous fusion, yielding 69 megajoules of energy. While JET was not intended to be a prototype for commercial power production, its results have contributed to ongoing fusion research efforts. Private enterprises and government-backed projects, such as WITER, Commonwealth Fusion Systems, and Tokamak Energy, are working on advancing fusion technology and hope to achieve fully commercial fusion power in the future.