Amazingly, a single day on Venus is longer than its entire year. It takes Venus 243 Earth days to completely rotate on its axis, but just 225 days to orbit the sun. Stranger still, Venus is one of two planets that rotates in reverse, a phenomenon called retrograde motion. Most theories attribute the reverse rotation to an ancient planetary collision.

Venus - one day is longer than its entire year. It takes Venus 243 Earth days to completely rotate on its axis, but just 225 days to orbit the sun. Venus is one of two planets that rotates in reverse, called retrograde motion.

Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth

Apparent retrograde motion - Wikipedia, the free encyclopedia

"The Apparent Retrograde Motion of the Planets," from Charles F. Blunt's "The Beauty of the Heavens," 1840s. "There is very little information online about this book or its author. Originally published in 1840, Charles F Blunt's educational book on astronomy incorporated an 1836 illustrated book, 'Uranographia,' by an Elizabeth Blunt (relationship to CF Blunt unknown). The 1842 edition of Blunt's 'Beauty of the Heavens' became very popular apparently. [An 1840 copy sold for ~1000$ in 1995]"

"The Apparent Retrograde Motion of the Planets," from Charles F. Blunt's "The Beauty of the Heavens,"

Retrograde Motion, Retrograde Planets, and their Number in the Natal Chart – Gregory Rozek – graphic design & astrology

Retrograde Motion, Retrograde Planets, and their Number in the Natal Chart – Gregory Rozek – graphic design & astrology

Saturn In Retrograde Motion | Tarotgems

On the of March Saturn, The Great Disciplinary will start it's Retrograde Cycle, is which going to last until the of August.

Apparent retrograde motion of #Mars!

looking-at-the-universe: “ Apparent retrograde motion of Mars ”

Retrograde Motion

Discussion of the three types of retrograde motion, including the apparent retrograde motion caused by one planet lapping another, retrograde rotation and retrograde orbital motion

Mars appears to reverse its course in the night sky. This image by Tunc Tezel shows the retrograde motion by layering images in time series. The dotted line to right is Uranus doing the same thing.

Retrograde: ~Mars appears to reverse its course in the night sky. This image by Tunc Tezel shows the retrograde motion by layering images in time series. The dotted line to right is Uranus doing the same thing.

Apparent retrograde motion - Wikipedia, the free encyclopedia

Retrograde Mercury Effects : slow thinking & decision making, weak communications, delays & obstacles in travel. Karmic reasons & connections from past life

What is retrograde motion? For the planets | Space | EarthSky

Retrograde motion of Jupiter or Mars or Saturn in our sky is an illusion, caused by Earth's passing these slower-moving outer worlds.

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