Question 1
According to the Ptolemaic (Greek) model of the universe, how many "heavenly" bodies could be observed wandering along the background of stars?
◦ two
◦ seven
◦ five
◦ one
Question 2
Why were planets called "wanderers" by early astronomers?
◦ They move in random paths across the sky due to their complex orbits around the Sun.
◦ They move relative to the Moon because of their orbits around Earth.
◦ They move relative to the North Star, but not other stars.
◦ They move relative to the stars.