China Completes Largest Fusion Magnet, Aiming for 2030 Power

China has just finished a huge magnet that will help create a tiny, super‑hot sun inside a machine.

The magnet is 21 metres long and weighs as much as 582 tonnes, about the weight of a Boeing 747.

It keeps the super‑hot gas, called plasma, from touching the walls of the reactor by using a powerful invisible magnetic field.

The plasma will reach temperatures about 10 times hotter than the Sun’s core, but the magnet itself must stay almost at absolute zero, around –269 °C.

Engineers built it so it can keep working for 60 years, carrying huge electric currents with almost no energy loss.

The whole project uses only Chinese-made parts, and China plans to build a full fusion power plant by 2030, which could give clean electricity without carbon emissions.