this post was submitted on 11 Oct 2025
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Wait the artificial sun was real?
The "artificial sun" is a clickbait term for the plasma in a fusion reactor. The tech's been around for decades (apparently the first tokamak was built in the USSR in the 50s) but they have yet to find a way to make the plasma last on its own (the record is a little over 20 minutes apparently) or to actually make them generate power.
They have gotten them to generate power, by which I assume you mean give off more energy than was used to create the reaction. But they haven't gotten them to sustain that.
https://www.theguardian.com/environment/2023/aug/06/us-scientists-achieve-net-energy-gain-second-time-fusion-reaction
Didn't know that! Guess it's good progress, but still definitely a long way from actually having fusion reactors as a power source.