Scientists have been attempting to develop a viable nuclear fusion reactor to create a clean and virtually limitless power source that could answer the energy problems of nations as they try to stop using fossil fuels. Now, a key component of the largest artificial sun has been manufactured in China and will make a breakthrough in the project as it nears completion.

The nuclear reactor is called the International Thermonuclear Experimental Reactor (ITER), which is currently under construction in France and will significantly outsize the largest experimental fusion reactor currently in operation. ITER is estimated to weigh around 23,000 tons and stand at nearly 30 meters tall once completed.

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