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How does each of the models of the universe explain the retrograde motion of planets?
Wiki User
∙ 14y ago
This is nothing as complicated as "models of the universe"... it is a geometric phenomenon. For example, if an outer planet - outside the Earth's orbit - is retrograde, that simply means that Earth is overtaking that planet; temporary the planet seems to go "backwards".
The main movement of planets is from West to East; but for part of each orbit, each planet will have an (apparent) movement from East to West - then it is said to be "retrograde".
Wiki User
∙ 14y 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.
What geometric arrangements did ptolemy use to explain retrograde motion?
Earths faster motion makes Mars appear to be going backwards, the backwards motion, in fact, is what caused retrograde motion. --Ptloemy used Epicycles to explain how geocentrical models worked.
How did the copernican explain retrograde motion?
Both models explain it simply, and even a simple model with circular orbits explains it easily. Normally, as the planets rotate round the Sun, they appear to move along the ecliptic from west to east. But in the short period around opposition, when the planets are opposite the Sun in our sky, and we are closest to them, they appear to move east to west because they are going round more slowly than us - we are overtaking them. That is retrograde motion.
How did Nickolaus Copernicus account for the retrograde motion of the planets?
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.
What is something that scientists use to explain something that is very small or very large?
Exponents is something scientists use to explain something that is very small or very large. Scientific notation is another useful tool.
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.
What geometric arrangements did ptolemy use to explain retrograde motion?
Earths faster motion makes Mars appear to be going backwards, the backwards motion, in fact, is what caused retrograde motion. --Ptloemy used Epicycles to explain how geocentrical models worked.
How did the copernican explain retrograde motion?
Both models explain it simply, and even a simple model with circular orbits explains it easily. Normally, as the planets rotate round the Sun, they appear to move along the ecliptic from west to east. But in the short period around opposition, when the planets are opposite the Sun in our sky, and we are closest to them, they appear to move east to west because they are going round more slowly than us - we are overtaking them. That is retrograde motion.
Describe what produces the retrograde motion of mars. what geometric arrangement did Ptolemy use to explain this motion?
Earths faster motion makes Mars appear to be going backwards, the backwards motion, in fact, is what caused retrograde motion. --Ptloemy used Epicycles to explain how geocentrical models worked.
What is the difference of the heliocentric model and the geocentric model?
Geocentric models had the earth as the center of the universe with the sun and all the planets orbiting it. Heliocentric models (the current accepted ones) have the sun as the center, with the earth and planets orbiting it.
Explain how dark affects models of the fate of the universe?
It basically will make worlds and such evolve a LOT faster than normal.
How did Nickolaus Copernicus account for the retrograde motion of the planets?
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.
What is something that scientists use to explain something that is very small or very large?
Exponents is something scientists use to explain something that is very small or very large. Scientific notation is another useful tool.
Explain why models are often used to study other planets.?
We use models to explain how life and such is. my example is the sun model. How would you know the orbit of the sun without that model? Now i know its a pretty simple reply but this is a simple question also. just think about it for a while
How did the heliocentric theory of universe differ from the geocentric theory?
the heliocentric theory is the theory that the sun is in the center of the universe. the geocentric theory is the theory that the earth is in the center of the universeGeocentric models had the earth as the center of the universe with the sun and all the planets orbiting it. Heliocentric models (the current accepted ones) have the sun as the center, with the earth and planets orbiting it.Geocentric was the idea developed by the Greek philosopher Aristotle of an earth-centered view of the solar system. With Christianity's influence, people had thought that God put Earth in the center of the universe. Heliocentric came later on by Italian astronomer Galileo that the sun was put at the center of the solar system while Earth and all the other planets orbit around it.
How did the heliocentric theory of the universe differ from the geocentric theory?
the heliocentric theory is the theory that the sun is in the center of the universe. the geocentric theory is the theory that the earth is in the center of the universeGeocentric models had the earth as the center of the universe with the sun and all the planets orbiting it. Heliocentric models (the current accepted ones) have the sun as the center, with the earth and planets orbiting it.Geocentric was the idea developed by the Greek philosopher Aristotle of an earth-centered view of the solar system. With Christianity's influence, people had thought that God put Earth in the center of the universe. Heliocentric came later on by Italian astronomer Galileo that the sun was put at the center of the solar system while Earth and all the other planets orbit around it.
How did the heliocentric theory of the universe differed from the geocentric theory?
the heliocentric theory is the theory that the sun is in the center of the universe. the geocentric theory is the theory that the earth is in the center of the universeGeocentric models had the earth as the center of the universe with the sun and all the planets orbiting it. Heliocentric models (the current accepted ones) have the sun as the center, with the earth and planets orbiting it.Geocentric was the idea developed by the Greek philosopher Aristotle of an earth-centered view of the solar system. With Christianity's influence, people had thought that God put Earth in the center of the universe. Heliocentric came later on by Italian astronomer Galileo that the sun was put at the center of the solar system while Earth and all the other planets orbit around it.
