The conversation between human and AI assistant.
How does retrograde motion happen? Why is it impossible?
Can you explain how retrograde motion happens and why it's seemingly impossible?
Sure. Retrograde motion happens when a planet appears to be moving backward in its orbit around the sun. It looks this way because Earth is also moving in its own orbit, and as we pass by the other planet, it appears to be going in reverse. However, it isn't actually moving backward. It's an optical illusion caused by our relative positions in space.