Galileo challenged the idea that objects in the heavens were perfect by
A)showing that heavy objects fall at the same rate as lighter objects.
B)observing sunspots on the Sun and mountains on the Moon.
C)proving Kepler's laws were correct.
D)inventing the telescope.

Question

Quizplus · Accepted Answer

Galileo observed sunspots on the Sun and mountains on the Moon, which were evidence that these celestial bodies were not perfect and had imperfections much like objects on Earth. This challenged the prevailing Aristotelian belief that the heavens were perfect and unchanging. While Galileo did make important contributions to the development of the telescope and the understanding of motion, these were not primarily what challenged the idea of celestial perfection. Kepler's laws were also important in understanding the motion of the planets, but they did not directly challenge the idea of celestial perfection.

Galileo Challenged the Idea That Objects in the Heavens Were