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The model doesn't just say the orbits are elliptical, it gives more details. Following Kepler's three laws it can be said that the average speed is inversely proportional to the square root of the major axis.

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10y ago

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What is the main difference between the orbits of the inner and outer planets?

The planets revolve in elliptical orbits. The inner planets have orbits 230 million km or less from the Sun. The outer planets have orbits 775 million km or greater.


What evidence do you have that the planets move in elliptical orbits around the sun and not in circular orbits?

Elliptical orbits of the planets around the sun actually match what we observe. Newton's Theory of Universal Gravitation states that planets will move around the sun in elliptical orbits.


What is the path planets travel?

Planets travel in elliptical orbits.


What has elliptical orbits?

As an elliptical orbit is any orbit that isn't perfectly circular, everything has an elliptical orbit. The planets Mercury and Pluto have the most elliptical orbits of the planets, and are easily seen to be oval shaped. Comets also have highly elliptical orbits.


What planet moved in an elliptical orbit?

All planets have elliptical orbits.


Who discovered the planets that have an elliptical orbits?

Johannes Kepler.


In what type of orbits do planets move around the sun?

Planets move around the sun in elliptical orbits. These orbits are elongated and follow Kepler's laws of planetary motion, which describe the shape and dynamics of the planetary orbits.


Do all planets have to be circle?

No, because all planets known have elliptical orbits.


Do all planets have eliptical orbits?

No, not all planets have elliptical orbits. While most planets in our solar system have nearly circular orbits, some planets, like Mercury and Pluto, have more elliptical orbits. Additionally, exoplanets outside our solar system can have a variety of orbital shapes.


Orbits of planets are not round but are?

ither elliptical, heliocentric, or position!!!


Who did discover planets move in elliptical orbits?

Johannes Kepler


What is credited with describing the orbits of the planets as elliptical?

Johannes Kepler