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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.
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.
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.
This motion is called retrograde motion. It occurs when a planet's motion in its orbit appears to reverse due to differences in orbital speeds and distances 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
"retrograde motion"
You observe its motion, with respect to the background stars.
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,.
When a superior planet is in the middle of its retrograde motion, it forms an opposition aspect with the Sun, with the Earth positioned in between. This alignment creates a geometric pattern known as superior conjunction, with the Sun, Earth, and planet forming a straight line in the same order.
Retrograde motion is an optical illusion where a planet appears to move backwards in its orbit when viewed from Earth. This occurs due to the difference in orbital speeds between Earth and the observed planet. Modern understanding attributes retrograde motion to the relative motion and positions of the Earth and the observed planet as they orbit the Sun.