Ordinary hydrogen-hydrogen fusion in the sun only works because the sun is so freakin' huge. It's so unlikely even under the sun's massive gravitational and he

Ordinary hydrogen-hydrogen fusion in the sun only works because the sun is so freakin' huge. It's so unlikely even under the sun's massive gravitational and heat that the power output is about 270W/cubic meter-- compare to human metabolism or an energetic compost pile, which is over 1000W/cubic meter. We actually have to do a whole lot better than the sun, under far less favorable conditions-- to have practical fusion for energy generation on Earth. Inertial confinement fusion ignition (and to a lesser extent, thermonuclear weapons) strongly suggest this is possible.