Linked by Thom Holwerda on Thu 26th Aug 2010 23:24 UTC
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Member since:
2005-07-12
No, the Earth is orbiting the Sun, and not at all the other way around. This is because the barycenter of the Earth-Sun system is contained within the Sun. In order to say the Sun orbits the Earth, the barycenter would have to be located within the Earth.
If the barycenter was at a point that was between the two bodies, but not within either, it would be a binary system. This is the situation with Pluto. Instead of having a moon, Charon really makes Pluto-Charon a binary system, as their barycenter is external to either body.