A private company in the United Kingdom says it has successfully tested its prototype nuclear fusion reactor at temperatures higher than the Sun, and expects to start supplying power by 2030. Called Tokamak Energy, the company is headquartered in Oxfordshire, UK United. Its nuclear fusion device is known as the ST40, and it is the third machine that the company has created so far. Today the firm revealed that it had reached plasma temperatures of 15 million degrees Celsius (27 million degrees Fahrenheit) inside the device.

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