Re: @ Iglethat & "since hes proven that hes a gullible idiot"
I personally haven't seen a lot of stars as any more than points of light. Planets I have seen, and there is no conclusive evidence that they're round. They seem to change shape, much like the moon.
As for the proposition that gravity always acts on the CoG, perhaps you can suggest how I could verify that experimentally. (Keep in mind that "always" is a big claim, and the finding must be valid at very large scale.)