I'm not sure where you went wrong, but your original notion was correct! http://www.wolframalpha.com/input/?i=%28Distance+to+Proxima+Centauri%29+%2F+%28Distanc

I'm not sure where you went wrong, but your original notion was correct! http://www.wolframalpha.com/input/?i=%28Distance+to+Proxima+Centauri%29+%2F+%28Distance+from+the+Sun+to+Pluto%29 http://www.wolframalpha.com/input/?i=%28Distance+to+Proxima+...