The earth, sun and everything else "in" the solar system follow paths
around the center of mass of the system, which is itself revolving
about the center of mass of the galaxy. Because the sun is more massive
than everything else in the solar system, for some purposes the model
consisting of a stationary sun and an earth which revolves around it is
a useful model.
- The earth revolves around the sun.
If "The earth revolves around the sun." is a fact, then facts are at
best models of reality. Models are only "true" when they pertain solely
to abstract concepts such as mathematics or other fiat systems.