First i'll start off by saying i'm a simpleton. So if anyone who comes into this thread and starts speaking numbers and equasions i will be dumbfounded. My interest in this subject started at around 2am in the morning when i should have been asleep but instead was sitting on my couch watching PBS. One of the (IMO) greatest documenteries i have ever seen came on. http://www.pbs.org/wgbh/nova/elegant/everything.html That is what it was. Here's what i posted in another topic about the matter.. "know it's off topic, but if anyone is interested in String Theory http://superstringtheory.com/ . Veeeeeeeeery interesting. Just sad that it will probably never be proved or disproved, due to the nature of it. It makes complete sense and answers simple questions like, if the sun were to suddenly dissapear, how can it be thought that gravity would suddenly "let go", and the planets would go flying off when, according to Einstein, nothing travels faster then the speed of light. So how can the force of gravity let go of the earth before light could even get from the Sun to Earth? How i ask?!? HOW!!??!! LOL." Now in response to retro78. Gravity is acutally one of the weaker forces. Electromagnitism will trump it almost all of the time. An example of this is someone jumping off a building. Gravity will pull you down and feel strong. But once it's power comes up against the force of electromagnatism holding the atoms of the ground together, it's powerless. Seriously though, this documentary http://www.pbs.org/wgbh/nova/elegant/everything.html is is definatly something, i think, everyone should watch.