Problem 1
List and explain Aristotle's observations and the reasoning he used to support his geocentric model of the Solar System.
Problem 2
Why did Aristotle and other ancient astronomers fail to notice a parallax shift when they observed the stars?
Problem 4
Explain how Galileo's studies of physics contributed to his rejection of Aristotle's geocentric model.
Problem 8
How is the Moon positioned with respect to Earth and the Sun when it is full, new, gibbous, and crescent?
