You guys have a lot of interesting questions. It's strange that you never asked me, I'm the physicist who discovered the graviton in 2,002.
Maybe this will help: Like everyone else I was looking for something that attracts, but could find nothing. So, on a whim I thought, how about something that pushes ?
And there it was, a particle. Someone in a chat said call it the graviton, and it stuck. It's an amazing particle. They orbit all atoms, like an electron, only charge-less and in huge orbits. It has a tiny mass, and it orbits at tremendous speeds.
It creates gravity by simply bumping into everything. It applies a weak force partly because most gravitons pass right through matter in the spaces between the atoms.
I have actually detected gravitons using something called a Graviton Sphere.
Alfred Schrader May26, 2011