Earth is the center of the universe. the planets revolve around the Sun. all stars eventually explode. the universe has many galaxies.
I gave my students this multiple choice question: In 1609, Galileo Galilei used lenses to construct the first telescope. His telescope allowed him to observe many objects in space. His invention of the telescope and the data he gathered directly contributed to the understanding that

Only one answer is correct among these 4 choices:
- Earth is the center of the universe.
- the planets revolve around the Sun.
- all stars eventually explode.
- the universe has many galaxies.

Could you tell me which one is correct?

the planets revolve around the Sun.