Why do planets sometimes go backwards?
When the Earth overtakes an outer planet, it seems to drift backwards for a few weeks.
It's like passing a slower car on a motorway: for a moment the other car seems to move backwards against the distant hills.
When the Earth overtakes an outer planet, it seems to drift backwards for a few weeks.
It's like passing a slower car on a motorway: for a moment the other car seems to move backwards against the distant hills.