Which of the following is an example of scientific knowledge changing?
A. There are eight planets in our solar system.
B. An asteroid belt separates planets in the solar system planets on the inside are small and rocky while planets on the outside are giant and gaseous.
C. People initially thought the Earth was the center of the universe, but evidence now
supports that the sun is the center of the solar system.
D. The moon's gravity controls the Earth's tides.