How close are we to having a manned mission outside of our solar system?

Question: How close are we to having a manned mission outside of our solar system?
- Keywords:
  mission,
  solar system
Asked by callumm to Steve, Shefali, Kevin, Katie, Floris, Delma on 11 Jan 2016. This question was also asked by ziarniaf.
- Steve Price answered on 11 Jan 2016:
  
  Hi,
  I’d really like to see manned travel beyond our solar system.
  At the moment, if we travelled to Mars it would take at least 6 months to get there. Going to the edge of the solar system would take years.
  People are working on new types of propulsion. I am sure we will find a way to travel faster in space.

Question: How close are we to having a manned mission outside of our solar system?