John Picard wrote:
Why do you say the propulsion system for a ship traveling to Mars has to be nuclear powered?
Because in most likelihood, it will have to be a nuclear engine that gets us to Mars. Only nuclear engines have enough thrust power to get a ship there, and also, NASA had already developed a nuclear engine for just such a task, the NERVA
, but budget cuts and Nixonian indifference killed its development. That project has to be started again, and carried to full completion this time, regardless of whatever anti-nuclear protests will happen. It's the only engine system capable of getting people to Mars in back in a few weeks, and it's that simple.