> "I have no idea what something that lies between those two would be." One example is the small nuclear reactors that have been used in orbit already: http://

> "I have no idea what something that lies between those two would be." One example is the small nuclear reactors that have been used in orbit already: http://en.wikipedia.org/wiki/TOPAZ_nuclear_reactor http://en.wikipedia.org/wiki/TOPAZ_nuclear_reactor