Retrograde inversion

ID: retrograde-inversion

Retrograde inversion, often referred to in the context of astronomy and planetary motion, describes the phenomenon when a planet appears to move backward (or retrograde motion) in its orbit as observed from Earth. This can happen when Earth, on its faster orbit, overtakes another planet that is slower in its orbit around the Sun. In the case of "inversion," the term is not commonly used specifically to describe retrograde motion.

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