In a reference frame floating in space, which do you think follows the straighter path?

Question

Quizplus · Accepted Answer

The center of mass of the Earth/Moon system follows the straightest path due to the conservation of momentum in a system not influenced by external forces. Both the Earth and the Moon orbit around their common center of mass, which moves in a smoother, more predictable path through space, essentially following the laws of motion and gravity without the perturbations seen in the orbits of the Earth and Moon around each other.

In a Reference Frame Floating in Space, Which Do You