Galileo discovered that Venus goes through a cycle of phases like the Moon. This suggested that
A) Venus moved about the Sun
B) Venus moved about the Earth
C) the Sun moved about the Earth
D) the Earth moved about the Sun

Question

Quizplus · Accepted Answer

Galileo's observation of Venus going through a cycle of phases similar to the Moon was crucial evidence that Venus orbits the Sun, not the Earth. This observation was inconsistent with the geocentric model (where Earth is the center of the universe) and supported the heliocentric model proposed by Copernicus, where planets, including Earth, orbit the Sun.

Galileo Discovered That Venus Goes Through a Cycle of Phases