Venus and Uranus have retrograde rotation.
There are other meanings of retrograde motion, but retrograde rotation fits the question best.
Mercury and Venus are the two planets that retrograde motion around the sun.
Uranus and Venus are the two planets in our solar system that have a retrograde rotation. All of the planets orbit the Sun.
The retrograde motion of planets
The two inner planets Mercury and Venus move in retrograde motion (east to west along the ecliptic) between their time of greatest distance from the Sun (elongation) to the east as an evening star and their greatest elongation west as a morning star.
retrograde motion
Mercury and Venus are the two planets that retrograde motion around the sun.
All planets orbit the sun in the direction that the sun is rotating. There are actually two planets that rotate by retrograde motion and are exceptions to this rule. These planets are Venus and Uranus.
Uranus and Venus are the two planets in our solar system that have a retrograde rotation. All of the planets orbit the Sun.
The planets don't have to "do anything" to "go into" retrograde motion. The retrograde motion, the "moving backward" that planets do as we watch them cross the night sky over the weeks, is due to the nature of the orbit of a planet and to our view of that orbit from earth.
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
Superior planets are in opposition when in the middle of their retrograde motion.
The retrograde motion of planets
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.
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Retrograde motion happens when the Earth overtakes an outer planet in its orbit. It happens around the date of Opposition when the planet is opposite the Sun in the sky. Usually planets travel from west to east along the ecliptic, but during retrograde motion they travel backwards, from east to west,.
Retrograde motion important in astronomy because it helped to explain that the planets revolved around the Sun. Retrograde motion is the ability of some objects to rotate in a direction that is opposite what is expected.
No, Ptolemy did.