Yes, that's generally correct. If you were to toss a solar mass of water into the sun, it would become fuel for the sun's fusion reactions. Fusion reactors work

Yes, that's generally correct. If you were to toss a solar mass of water into the sun, it would become fuel for the sun's fusion reactions. Fusion reactors work in a similar way, but on a much smaller scale. They use fuel, typically hydrogen or a mixture of hydrogen and helium, and use intense heat and pressure to fuse the atoms together, releasing a large amount of energy in the process.