NASA's Project Prometheus was established to develop technology
and conduct advanced studies in the areas of radioisotope
power system and nuclear power and propulsion for the peaceful
exploration of the solar system. Project Prometheus, organized
within NASA's Office of Space Science, has the goal of developing
the first reactor powered spacecraft capability and demonstrating
that it can be operated safely and reliably in deep space
on long duration missions. The proposed Jupiter Icy Moons
Orbiter has been indentified as the first space science mission
to potentially incorporate this new revolutionary capability.
More information about Project Prometheus can be found
Space Science web site.
Mission Fact Sheet