maybe I have gone mad at the age of 28. but maybe God kicked my butt and made me start to think. I need to know what causes gravity. I see some say its a graviton (like dark matter). but why would that travel to the center on each planet? and what would increase the numbers on earth instead of all the other planets. I have also read that gravity cannot be a law because of the fact it cannot be constant. I'm sure all you know that in order for something to become a scientific law you have to test, test, test and make sure you get the same number every day. if you drop a leaf it will not land in the same location it did the day before if you released it from the exact spot. wind is to much of a factor. plus we can all guess that speed of the earth in the center is faster then it is at the north pole. and we all know centripetal force causes something to have more or less weight at the rate in which it is moving. does every molecule have a magnet? yes I kow two protons have a pull; but would that mean that at the center of every bubble in space has one that attracts them to the center and the only reason we don't go to the center is because the ground is in our way? so can anyone prove gravity? can anyone justify why or how we are weighted to a planet or star? or am I just going mad with science?