•9. While all of the following are discoveries of Galileo, which of the four listed is NOT one which DIRECTLY contradicts the "Aristotelian" view of the heavens.
•a.The
discovery of "imperfections" on celestial bodies, such as mountains and valleys on
the moon and
changing sunspots on the sun.
•b.The
discovery of the phases of Venus, ranging from new to crescent to
"quarter" to gibbous to full.
•c.The
discovery that the Milky Way is actually composed of a large number of very faint
stars.
•d.The discovery of four moons orbiting
Jupiter.