Jennie, I think we definitely wandered down a rat hole as you suggest. Humble apologies if I led you to the entrance and invited you in and totally off-thread so to speak. However, you are mistaken. Gravity, or more specifically the existence of it, is WHY the earth orbits the sun. HOW it does it is simply the mathematical equations associated with gravity, the mass of the objects, relative speeds etc etc etc. No gravity = no orbiting (and no celestial objects to do it with come to think of it). Now, what was this thread about (I think I had better go back to the beginning and start again)?
Love Sandy x
I am never wrong. I once thought I was wrong but it turned out I was mistaken.
