Question

What trait do all solar system models share?

Answer 1

Answer:

The traits that all the solar system models do share is that they have a circular orbit around the sun.

Answer 2

Answer:

All planets have epicycles.

Explanation:

In all models of solar systems all planets had epicycles. Which are cycles formed by the rotation of one space body around another.

This concept was first presented by Ptolemy, with his geocentric model of the solar system. Despite the difficulty in understanding and explaining the observed movement of planets from the geocentric point of view (the Earth at the center of the universe), geocentrism was a dominant idea in astronomy throughout antiquity and the Middle Ages. The geocentric system is also known as the ptolomaic system. In this model the movement of the planets through a combination of circles: the planet moves along a small circle called the epicycle whose center moves in a larger circle called the deferent.

Epicycles also existed in the heliocentric model created by Copernicus. In this model, the world is spherical and finite, like all celestial bodies, and their motion is circular and uniform. The sun is fixed (motionless) in the center of the system and around it rotates the planets (which revolve around themselves).