Fusion reactions take place in a state of matter called plasma—a hot charged gas made of ions and free-moving electrons—and require temperatures exceeding 100 million degrees Celsius to enable the nuclei to overcome their mutual electric repulsion and collide.

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.

Fusion energy has the potential to be an effective clean energy source, as its reactions generate incredibly large amounts of energy. Fusion reactors aim to reproduce on Earth what happens in the core of the sun, where very light elements merge and release ...

Highly dependent on imported fossil fuels and renewable energy technologies from foreign powers such as the US, China, and Russia, Europe’s energy security is in a precarious state. One potential fix? Harnessing nuclear fusion — the same atom-colliding ...

MADISON — Fusion energy's potential to produce abundant, clean energy to fuel industry and power advancements in artificial intelligence is no longer a matter of if, but when. Wisconsin happens to have everything the rapidly-developing energy sector ...

Once a testing ground for Soviet weapons, the country is using a unique facility to find materials that withstand plasma that’s 10 times as hot as the sun’s core

Even once researchers can reliably get more power out of a fusion reaction than they put in, they'll still need to overcome engineering challenges to scale up fusion energy. When you purchase through links on our site, we may earn an affiliate commission.

Researchers discovered heat in fusion reactors doesn't diffuse slowly—it executes an American football-style "long pass."