Well, you could go outside and do it with marbles and soccer balls: http://florin.myip.org/blog/i-had-no-idea-just-how-big-solar-system-really http://florin.my

Well, you could go outside and do it with marbles and soccer balls: http://florin.myip.org/blog/i-had-no-idea-just-how-big-solar-system-really http://florin.myip.org/blog/i-had-no-idea-just-how-big-solar...