Quote Originally Posted by CoccoBill View Post
^I'm guessing we're close enough to the sun to be locked in its gravity.
Replace "locked in" with "bound by" and you are speaking my language.

Really, it's the entire system that is bound by the entire system's local gravity. I.e. it's not merely that the Earth is bound to the Sun's gravity. It is also that the Sun is bound to the Earth's gravity.

I think this is nothing more than a nit-pick by me, though.