The proposal is for a fission surface power system, and the goal is to have a flight system, lander and reactor ready to launch by 2026.https://www.cnbc.com/2020/11/15/why-nasa-wants-to-put-a-nuclear-power-plant-on-the-moon.html
The goal, apparently, is to generate 10 Kw, or about enough to power “five to eight large households.”
Um. That’s not really enough for an actual lunar base. Try again?
Astronauts on a trip to Mars would be exposed to very high levels of radiation which can cause serious long-term health problems such as cancer and sterility. Radiation shielding can help, but it is extremely heavy, and the longer the mission, the more shielding is needed. A better way to reduce radiation exposure is to simply get where you are going quicker.
Hmm. So putting them in a ship with a giant nuclear fission reactor is safer?
I think somebody may want to come up with a backup plan…