Supposed to Be Better Than the Tokamak. It Lost for 70 Years. Now It's Back
In December 2015, physicists in Greifswald, Germany, fired up Wendelstein 7-X — the world's largest stellarator. The plasma held. Why a concept theoretically free of the tokamak's biggest flaws is now racing back, powered by HTS magnets and private capital.
2026-07-27
