- Which ancient astronomer developed a geocentric model of the universe explaining the observable motions of the planets?
AAristotle
BPtolemy
CCopernicus
DNewton
- Aristotle concluded that Earth was round because ____.
Ait always casts a curved shadow during a lunar eclipse
Bhe sailed around the world
Che calculated Earth’s circumference
Dit exhibited retrograde motion
- The first early astronomer to propose a sun-centered solar system was ____.
AGalileo
BNewton
CCopernicus
DBrahe
AAristotle
BPtolemy
CCopernicus
DNewton
Ait always casts a curved shadow during a lunar eclipse
Bhe sailed around the world
Che calculated Earth’s circumference
Dit exhibited retrograde motion
AGalileo
BNewton
CCopernicus
DBrahe