A solution could be to use a black hole powered starship that uses a parabolic reflector to protect against radiation ( http://news.ycombinator.com/item?id=9697

A solution could be to use a black hole powered starship that uses a parabolic reflector to protect against radiation ( http://news.ycombinator.com/item?id=969794 http://news.ycombinator.com/item?id=969794 - The Physics of Building a Black Hole Powered Starship [pdf] ).