Why do people use rocket fuel instead of nuclear power for spacecraft?

Question

Why do people use rocket fuel instead of nuclear power for spacecraft?

In: Technology

Answer 1

I vaguely remember watching the old “Cosmos” television series, where Carl Sagan said something about how there was some sort of treaty that disallowed use of nuclear devices in space. He also mentioned that this was a pity, because space exploration is intended to be for peaceful purposes.