http://www.stumbleupon.com/url/www.georgehart.com/virtual-polyhedra/kepler.html Comments & Reviews of http://www.georgehart.com/virtual-polyhedra/kepler.html on StumbleUpon en-us Fri, 05 Sep 2008 10:39:02 -0700 Sun, 31 Aug 2008 16:47:16 -0700 http://www.stumbleupon.com/url/www.georgehart.com/virtual-polyhedra/kepler.html http://cdn.stumble-upon.com/images/logo_su_36x36.png Fri, 24 Aug 2007 06:58:15 -0700 http://j4m3sb0nd.stumbleupon.com/review/12064266/ j4m3sb0nd - "The image above is a closeup of the spheres of inner planets, Mercury, Venus, Earth, and Mars. This is a beautiful astronomical model. For example, it explains why there are only six planets: How could there be a seventh planet, when Euclid proved that there are only five Platonic solids! Of course, the model is completely false, the interplanetary distances it predicts are not sufficiently accurate, and Kepler was scientist enough to accept this eventually. But it is an excellent example of how truth and beauty are not always equivalent."]]> http://www.stumbleupon.com/url/www.georgehart.com/virtual-polyhedra/kepler.html