Will humanity ever spread beyond the solar system and if so, will we use nuclear power?

Question: Will humanity ever spread beyond the solar system and if so, will we use nuclear power?
- Keywords:
  future,
  society,
  solar system
Asked by to Simon on 13 Mar 2014. This question was also asked by .
- Simon Albright answered on 13 Mar 2014:
  
  I really hope the answer to both is yes. If it’s not we will only be around for as long as the sun.
  
  We already use nuclear power in space now. The mars rovers and the Voyager satellites have a small quantity of Plutonium on board which is a radioactive element we can get power from. I don’t think any other type of power would be possible, though I won’t say it’s impossible.

Question: Will humanity ever spread beyond the solar system and if so, will we use nuclear power?