During the Middle Ages, people relied on what two principal authorities for their understanding of the universe? What are those two principal authorities?

1. Ancient philosophers

2. Church tradition

Explanation:

The middle ages were between the fifth century to the fifteenth century. It was characterized by many things ranges from social-cultural belief to the style of governance, and the understanding of t universe.

During this period, people relied on certain two principal authorities for their understanding of the universe, they are:

1. Ancient philosophers: such as Socrates, plato, etc

2. Church tradition: such as Catholic church etc.