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Q: Did Copernicus believed the orbits of planets were round?
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What did Ptolemy believe the earth went round?

Ptolemy believed that the Earth was a stationary sphere at the center of the universe and that the Sun, Moon, planets, and stars revolved around it in perfect circular orbits. This geocentric model of the universe was accepted for centuries until the heliocentric model proposed by Copernicus.


What astronomer discovered that the orbits of the planets are elliptical rather than round?

Johannes Kepler.


Why do you think planets do not have same orbits?

It's because each planets is a collection of all the debris that was going round in a similar orbit before the planets were formed. So the planets only survived to the present day by having different orbits.


Is Copernicus theory correct?

No physical theory is completely correct, because measurements always have a built-in error that you hope is small. But Copernicus's theory explaining in detail how the planets move was accurate enough for its time and was only found lacking later when observational techniques became sufficiently refined to show its errors. In modern times we have better theories for planetary orbits but Copernicus's general idea that all the planets orbit round the Sun is now generally accepted since Newton's theoretical discoveries, which were applied to showed that the Sun is far more massive than anything else in the solar system.


21 How did Kepler deviate from the beliefs of Aristotle and Copernicus in his first law?

Kepler's first law of planetary motion stated that the planets move in elliptical orbits with the Sun at one of the foci, contrary to Aristotle's and Copernicus's belief in circular paths. This deviation emphasized that orbits were not perfect circles, marking a significant departure from the established circular-centric views of the time.

Related questions

What did Ptolemy believe the earth went round?

Ptolemy believed that the Earth was a stationary sphere at the center of the universe and that the Sun, Moon, planets, and stars revolved around it in perfect circular orbits. This geocentric model of the universe was accepted for centuries until the heliocentric model proposed by Copernicus.


Who drew a model that showed the sun and planets going round the earth?

Copernicus


Orbits of planets are not round but are?

ither elliptical, heliocentric, or position!!!


Do the inner planets have direct or in direct orbit?

All the planets have direct orbits round the Sun.


What did Copernicus do?

In the Dark Age of Science, it was believed that Earth was in the center of Solar System and all the planets including sun, revolve round the sun. This is called Geocentric Theory.Nicolas Copernicus, A Polish*Astronomer, proved that earth and other planets revolved round the sun. This is Heliocentric Theory.(Copernicus proposed the Heliocentric Theory in 1543, 64 years before the invention of telescope. I was all the work of his Mathematics.)_________________________________________________________________* Polish Astronomer is an Astronomer from Poland


How does the orbits effect the way planets move?

Orbits help a planet move because of gravitational pull which makes the planet orbit round and round. The planets orbit around the son and the moon orbits around earth. Hope this helps!


What makes the motion of planets revolutionary?

They revolve. They all have individual orbits round the Sun. The orbits closely approximate ellipses.


What are the orbits of the gas giant planets?

They are the path taken by the gas giant planets (that is Jupiter and Saturn) as they go round the Sun.


What astronomer discovered that the orbits of the planets are elliptical rather than round?

Johannes Kepler.


Why do you think planets do not have same orbits?

It's because each planets is a collection of all the debris that was going round in a similar orbit before the planets were formed. So the planets only survived to the present day by having different orbits.


How does Kepler's first law of planetary motion refine Copernicus' model?

Kepler's first law states that planets move in elliptical orbits with the Sun at one of the foci, rather than perfect circles. This refinement allowed for a more accurate prediction of planetary positions compared to Copernicus' model, which assumed circular orbits.


Is Copernicus theory correct?

No physical theory is completely correct, because measurements always have a built-in error that you hope is small. But Copernicus's theory explaining in detail how the planets move was accurate enough for its time and was only found lacking later when observational techniques became sufficiently refined to show its errors. In modern times we have better theories for planetary orbits but Copernicus's general idea that all the planets orbit round the Sun is now generally accepted since Newton's theoretical discoveries, which were applied to showed that the Sun is far more massive than anything else in the solar system.