109K views · 3.3K reactions | * Mercury’s retrograde motion * This...

2.6M views · 48K reactions | Jupiter and Saturn go retrograde 敖 This...

Jupiter, the largest planet in our solar system, undergoes an apparent retrograde motion as seen from Earth. But what does that mean? Retrograde motion is an optical illusion that occurs when a planet appears to move backward in the sky due to differences in orbital speeds. As Earth, moving faster in its inner orbit, overtakes Jupiter, the gas giant seems to temporarily reverse direction before continuing its normal prograde motion. Jupiter’s next retrograde motion will take place from November