You'd have to scour a big chunk of the solar system. No, bombarding regular water with neutrons from fission reactions will produce heavy water. https://en.wi

You'd have to scour a big chunk of the solar system. No, bombarding regular water with neutrons from fission reactions will produce heavy water. https://en.wikipedia.org/wiki/Heavy_water#Production https://en.wikipedia.org/wiki/Heavy_water#Production