Excellent news!
Physicists in Germany have used an experimental nuclear fusion device to produce hydrogen plasma in a process similar to what happens on the Sun. The test marks an important milestone on the road towards this super-futuristic source of cheap and clean nuclear energy.
Earlier today in an event attended by German Chancellor Angela Merkel (herself a PhD physicist), researchers from the Max Planck Institute in Greifswald turned on the Wendelstein 7-X stellarator, an experimental nuclear fusion reactor. (Actually, the researchers let Merkel do the honors.) This €400 million ($435 million) stellarator is being used by physicists to test the technical viability of a future fusion reactor.
Unlike nuclear fission, in which the nucleus of an atom is split into smaller parts, nuclear fusion creates a single heavy nucleus from two lighter nuclei. The resulting change in mass produces a massive amount of energy that physicists believe can be harnessed into a viable source of clean energy.
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