What actually moves around the Sun along the path we usually call Earth's orbit?

Question

Quizplus · Accepted Answer

The barycenter is the point around which the Earth and the Moon orbit each other, due to their gravitational attraction. This point is not located at the center of the Earth, but rather slightly off-center towards the Moon. As a result, it is the barycenter that moves around the Sun along Earth's orbit, not the center of Earth or the point midway between Earth and the Moon. The barycenter is essentially the center of mass of the Earth-Moon system.

What Actually Moves Around the Sun Along the Path We