>So sure I don't think we'll ever see one launch off Earth's surface Are you saying you don't think a nuclear reactor powered spacecraft will ever be launched

>So sure I don't think we'll ever see one launch off Earth's surface Are you saying you don't think a nuclear reactor powered spacecraft will ever be launched into space on a chemical rocket in the forseeable future, or that you don't think nuclear powered rockets will ever be used to get from ground to orbit? You're probably aware, but nuclear power in space has not been limited to plutonium powered RTGs that output a few hundred watts. https://en.wikipedia.org/wiki/US-A https://en.wikipedia.org/wiki/US-A https://en.wikipedia.org/wiki/BES-5 https://en.wikipedia.org/wiki/BES-5 https://en.wikipedia.org/wiki/TOPAZ_nuclear_reactor https://en.wikipedia.org/wiki/TOPAZ_nuclear_reactor https://en.wikipedia.org/wiki/RD-0410 https://en.wikipedia.org/wiki/RD-0410 https://en.wikipedia.org/wiki/Nuclear_power_in_space https://en.wikipedia.org/wiki/Nuclear_power_in_space