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How did Nickolaus Copernicus account for the retrograde motion of the planets?
Wiki User
∙ 9y ago
The retrograde motion of the planets is well modelled by both the Ptolemaic system and the Copernican system, and by the other models.
But the Copernican system explains it more simply because, for example, Mars's retrograde motion is caused simply when Mars is overtaken by the Earth, which goes more quickly round the Sun.
Thus an observer on the Earth sees Mars appearing to go 'backwards' on the ecliptic around the time of closest approach (opposition). This can be easily demonstrated by assuming simple circular orbits.
Wiki User
∙ 9y ago
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How did Copernicus explain the retrograde motions of the planets?
All the models explain retrograde motion because it is such an obvious phenomenon. In Copernicus's model an outer planet goes into retrograde motion when the inner planet overtakes it so that it appears from the inner planet to be going backwards along the ecliptic.
Which planets have retrograde?
If you mean "retrograde rotation", they are Venus and Uranus.
Which planet rotate in retrograde motion?
Uranus and Venus are the two planets in our solar system that have a retrograde rotation. All of the planets orbit the Sun.
What two planets that retrograde motion around the sun?
Mercury and Venus are the two planets that retrograde motion around the sun.
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.
How did Copernicus explain the retrograde motions of the planets?
All the models explain retrograde motion because it is such an obvious phenomenon. In Copernicus's model an outer planet goes into retrograde motion when the inner planet overtakes it so that it appears from the inner planet to be going backwards along the ecliptic.
Major advantage of Copernicus' Sun-centered model over the Ptolemaic model?
It offered more natural explanation for the apparent retrograde motion of planets in our sky.
Purpose of using epicycles and deferents to explain the motion of the planets in the night sky was to account?
retrograde motion
Which planets have retrograde?
If you mean "retrograde rotation", they are Venus and Uranus.
Which planets orbit in a retrograde rotation?
The planets Venus, Uranus and Pluto rotate in retrograde rotation. Hope that helped ~ :-))
What planet has a retrograde revolution?
Retrograde refers to a planetary movement in which specific planets turn in a different direction than others. Planets with retrograde movements are Uranus and Venus.
Which planet rotate in retrograde motion?
Uranus and Venus are the two planets in our solar system that have a retrograde rotation. All of the planets orbit the Sun.
What two planets that retrograde motion around the sun?
Mercury and Venus are the two planets that retrograde motion around the sun.
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 do the planets do to incur retrograde motion?
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.
How did Claudius Ptolemaeus account for the retrograde motion of the planets?
Each planet moves on an epicycle that in turn moves on a deferent that circles around Earth.
Why was it difficult for ancient astronomers to explain about the apparent retrograde motion?
If, as ancient astronomers thought, that our Earth was the center point of rotation for other planets, then it is difficult to explain why those planets would move in a direction opposite to their rotation. Ptolemy came up with a solution that worked, but it was a cumbersome one. Nicolae Copernicus was able to show that this retrograde motion could be explained easily if it were assumed that our Sun was the actual center of rotation of the planets.
