Retrograde Planetary Effects SD 480p

A short and very (very) quickly put together video to illustrate how and why planets, such as Mercury, in this case, appear to move retrograde, backwards relative to their usual path of motion when viewed from planet Earth.

[@alicehurst2234]

This was an interesting watch. Thanks for sharing the visual for the meaning of retrograde.

[@joemolloyshaman]

Thanks Alice 😃