Fusion still can't power a single home after 70 years of trying. A fusion rocket turns out to be a far easier machine to build. One just lit up in the UK. The reason rockets are easier is the best part of this story. Power plants have to hit breakeven. The reaction must put out more energy than you pump in, then you convert that heat to electricity at maybe 40% efficiency, then you compete with natural gas at around 4 cents a kilowatt hour. Nobody has cleared that bar commercially. Rockets…