Which of the following did Galileo find most significant about his observations of the motions of the large moons of Jupiter?
A) Their motions are counterclockwise (viewed from the north),just like the orbits of the planets.
B) Their orbits were elliptical,just like Kepler predicted.
C) Their orbits obeyed Kepler's second law.
D) The moons farther from Jupiter had longer periods,just as Copernicus had discovered for the planets around the Sun.

Question

Quizplus · Accepted Answer

Galileo's observation of Jupiter's moons showed that the farther a moon was from Jupiter, the longer its orbital period. This was significant because it mirrored the relationship Copernicus had found for the planets around the Sun, supporting the heliocentric model.

Which of the Following Did Galileo Find Most Significant About