What did Galileo's observations of a complete set of phases of Venus prove?
A)that Venus orbited the Sun
B)that the Earth orbited the Sun
C)that all of the planets orbited the Sun
D)that Venus had an atmosphere

Question

Quizplus · Accepted Answer

Galileo's observations of the phases of Venus demonstrated that Venus orbits the Sun, as the phases could only be explained if Venus was orbiting the Sun, not Earth.

What Did Galileo's Observations of a Complete Set of Phases