Question

Kepler fine-tuned Copernicus’ heliocentric model by______________.

determining that the planets rotate on an ellipse
determining a model to measure distances between planets
developing the theory that stars did not rotate around the sun
developing a globe that would demonstrate the rotational axis.

Answer 1

determining that the planets rotate on an ellipse

Step-by-step explanation:

Nicholas Copernicus's contributions to astronomy broke with the geocentric view that atrocities revolved around the earth and gave way to the heliocentric vision, in a planetary model in which the earth and the other stars revolve around the sun. However, Copernicus could not clearly describe the shape of the orbit of the planets. The resolution of the problems of the Copernican planetary model was proposed by Johannes Kepler. To this end, Kepler admitted that the planetary orbits were not perfectly circular but elliptical. Kepler has established two laws governing the motion of the planets and a third law, which allows estimating the orbital period or even the radius of the orbit of planets revolving around the sun.

Answer 2

The correct answer is determining that the planets rotate on an ellipse

He discovered that the planets weren't going around in circles, but rather followed an elliptical path, while still keeping the idea of the Sun being in the center.