jan diaz says the reactor which generate the electrical energy needed for the past my engine this would offer the autonomy that no chemical drive would guarantee . chemical propulsion thrusters could still be used to launch and guide the spaceship into orbit where plasma engine running on nuclear power with then take over. this would considerably shorten the flight time. these are missions that are game changing that changes the chemistry of the me of the mission the changes the architecture it reduces a great deal of the issues of human survivability all the problems that we have with physiology with the conditioning of the human body all of those things. begin to get less less difficult. time is a crucial factor. shaving a few months off the trip means less food would be needed as well as reducing the harmful physiological effects of long spaceflight. puts months with the weak. point for lower like all other things variable we want to minimize as the flight duration it has to be as short as possible so that we need as little logistics and as few supplies as possible because we have to