No center to an infinite Universe. Earth orbits central fire. Plato's successor at Academy. Earth rotates on axis once per day about axis. Sun at center.
Earth orbits Sun, and rotates once per day about axis.
Weather permitting, we will be spending some time outside, looking at the stars. Dress warmly, and bring your sky charts. Plato, excerpt 6. These excerpts are from Timaeus , Plato's work on cosmology. The first part is from the beginning of the work, and is mainly included here to show the approximate ideal society that was described in his Republic , though there are some differences.