Explorations: Introduction to Astronomy (Arny), 6th Edition

Chapter 2: The Rise of Astronomy

Thought Questions

1
Some people still believe the Earth is flat. What "proof" would you offer them that it is round? Could you persuade them?
2
Suppose the stars were very much closer than they really are. How might that have made it easier for Aristarchus to persuade people that the Earth moves around the Sun?
3
Tycho argued that the Sun orbited the Earth but that the other planets orbited the Sun. Could Tycho's model explain the phases of Venus as observed by Galileo? Why?
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