Which planetary model allows a scientist to predict the exact positions of the planets in the night sky over many years? a) the planets' orbits are circles in a geocentric model b) the planets' orbits are circles in a heliocentric model c) the planets' orbits are ellipses in a geocentric model d) the planets' orbits are ellipses in a heliocentric model

A) The planets' orbits are circles in a geocentric model

Explanation:

Both the geocentric and Heliocentric models are often used, as in such systems the origin of the center is the sun and all planets revolve around it. As with the sphericity of the planets being discovered the as the sun does not move given by European astronomers given after Copernicus, his book on the revolution of heavenly spheres discusses that universe was same as that of Ptolemy but was not elaborated in geometric details. As he believed that the mobility of the earth, however, did not revolve around the sun as heliocentric velocity due to gravitational attraction can impact the rotational observance of the planet.

It's A because in that model it's gas the sun in the middle and it shows the different layered circles and how they move whitch helps balance our solar system

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