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What is the name given to the phenomenon in which the apparent motion of the planets sometimes reverses?
Wiki User
∙ 8y ago
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,.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoIt is called retrograde or cyclical retrograde.
You are correct in saying 'appears to' as the planet does not actually reverse direction, it is from the observers viewpoint that this apparently happens.
Wiki User
∙ 14y agoWhen a planet appears to reverse their direction in travel it is called retrograde.
Wiki User
∙ 13y agoThey are in a retrograde rotation (clockwise from above the north pole). The two examples in our solar system include Venus and Uranus.
Wiki User
∙ 11y agoThis is called retrograde rotation. Within our solar system, the planets of Venus and Uranus have retrograde rotation.
Wiki User
∙ 14y agoretrograde motion ")
Wiki User
∙ 8y agoRetrograde motion
Wiki User
∙ 17y agoThe view of planets is caused by paralax.
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What is the planet on which the sun does not rise and set?
All planets that rotate in our solar system will see apparent sun rise and sun set There are no planets that are stationary not to view the apparent sun rise and sun set.
What was the purpose of the epicycle in the Ptolemaic model?
Epicycles helped account for the apparent motion of the other planets in the geocentric model.
What was Ptomeny trying to explain in his model by having the planets move on smaller circles that move on bigger circles?
to explain the motion of planets, especially the phenomenon of retrograde motion where planets appear to temporarily reverse their direction of motion. Ref: Andrew Liddle "An Introduction to modern Cosmology".
Why do planets wander?
The ancient Greeks called planets 'wanderers' because they appear to move through ther skies in relation to the 'fixed' stars. The apparent movement is because the planets are much closer to the Earth than the stars, and all planets rotate around the Sun, thus all move in relation to each other.
Where are the 8 planets in the world whether above the earth or below the earth?
There are now 8 recognized planets in our Solar System (Pluto is no longer considered a planet); if you want planets other than Earth, that leaves only 7. Since the Earth rotates approximately once every 24 hours, these 7 planets are sometimes above us, sometimes below.
When the earth ocassionally reverses direction is called what motion?
The earth never reverses direction, nor does any other planet. The APPARENT reversal of direction of some other planets, as seen from earth, is called retrograde motion.
What is it called when planets move east to west?
Apparent motion of the planets.
What are the inner planets sometimes call?
the inner planets are sometimes called Terrestrial Planets
In what direction is the sun's annual motion relative to the fixed stars?
The Sun's apparent motion among the stars is from West to East - just like the motion of the Moon, and the predominant motion of the planets (planets sometimes go from East to West, too - in this case they are said to be retrograde).
What is the planet on which the sun does not rise and set?
All planets that rotate in our solar system will see apparent sun rise and sun set There are no planets that are stationary not to view the apparent sun rise and sun set.
How does the Suns apparent path change over the year?
it gives planets sun
Do the planets in the solar system all move in retrograde motion?
YES. There are several meanings to "retrograde" in astronomy. In this case, I am assuming you mean the apparent "backwards" orbital motion of a planet that is sometimes seen. This is very obvious in the case of Mars. Also, all the outer planets show this "apparent retrograde motion". It's easy to forget, but Mercury and Venus also show this behaviour, but in a slightly different way.
What is Mercury's apparent motion?
mercurys motion can be like any other planets motion
What are the inner three planets sometimes called?
terrestrial planets
What are the positions of 8 planets?
All the planets move constantly in their orbits around the Sun, so the apparent positions of the planets in the sky is also constantly changing. I recommend the Stellarium planetarium program.
What are the outer planets except for Pluto sometimes alled?
Dwarf planets
Why are planets called major planets?
They are sometimes called "major planets" to distinguish them from the "minor planets" (the asteroids) and "dwarf planets" like Pluto.
