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Retrograde motion is where a body is moving in the direction opposite to the movement of something else. Not to be confused with apparent retrograde motion. [See related link]

If you were on a child's roundabout and your friend was running alongside in the same direction you were spinning, that would be prograde. If however, your friend turned around and ran the opposite way, that would be retrograde motion. [See related link for a pictorial]

In astronomy:

  • The Earth and four other planets rotate in the same direction as the Sun does; Prograde.
  • Venus and Uranus rotate in the opposite direction; retrograde.

Do not confuse this with retrograde revolution, as no planet revolves in the opposite direction to the Sun.

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Related Questions

The apparent westward movement of a planet is known as?

The apparent westward movement of a planet is known as retrograde motion. This phenomenon occurs when a superior planet passes Earth in its orbit, making it appear to move backward in the sky relative to the stars.


Was retrograde motion a theory?

Retrograde motion describes something by definition. It is not and has never been a theory.


What is the difference between prograde and retrograde?

Prograde motion is a counter-clockwise motion or west to east, retrograde motion is clockwise motion or east to west.


Which two planets have Retrograde motion?

Venus and Uranus have retrograde rotation.There are other meanings of retrograde motion, but retrograde rotation fits the question best.


What planet has a moon that exhibits retrograde motion?

Neptune has a moon named Triton that exhibits retrograde motion. Retrograde motion is when a moon orbits its planet in the opposite direction of the planet's rotation.


What actors and actresses appeared in Retrograde Motion - 2013?

The cast of Retrograde Motion - 2013 includes: Thomas Denman


During which months was mars in retrograde motion?

Mars was in retrograde motion in 2020 from September 9th to November 13th, and it will be in retrograde motion again in 2022 from October 30th to December 13th.


What two planets that retrograde motion around the sun?

Mercury and Venus are the two planets that retrograde motion around the sun.


What is retrograde motion as applied to a planet?

The "apparent" reverse or backwards motion of a planet as observed from Earth. The innermost planets appear to have a retrograde motion when viewed from Earth.


What planet has retrograde motion?

venus


What is the planet that rotates by retrograde motion?

Actually, 3 planets rotate in a retrograde motion, which, by the way, means that they rotate East to West, or in a counterclockwise motion. Most planets rotate in a clockwise direction, or West to East. The three planets that rotate in a retrograde motion are Venus, Uranus and Pluto.venus


When mars is in retrograde motion will it appear brighter or dimmer?

When Mars is in retrograde motion, it does not affect its brightness. Mars will continue to appear at its usual brightness in the night sky regardless of its retrograde motion. Retrograde motion refers to how the planet appears to move in the sky, not its actual brightness.