The Sun generates its energy through a process called nuclear fusion. In its core, hydrogen atoms fuse together under the ...

Teams in France are assembling the core of ITER, the gigantic experiment that seeks to harness energy from fusion, similar to that of a star.

The temperature in the Sun's core is about 27 million degrees Fahrenheit (15 million degrees Celsius), hot enough to make fusion reactions work perfectly. 5 million gigapascals. Think about this: the ...