Ancient

What model of the universe did Ptolemy propose?

What was Ptolemy's major astronomical work called?

What did Ptolemy use to explain irregular planetary motion in his geocentric model?

Hint: Small circles on circles

Which ancient Greek philosopher taught that the Earth was a sphere?

Which ancient Greek astronomer first proposed a heliocentric model?

Hint: He lived about 300 BC, long before Copernicus

Which ancient Greek scientist calculated the circumference of the Earth with remarkable accuracy?

Hint: He used shadows at two different cities

Choose the correct answer for this Astronomy review prompt: What model of the universe did Ptolemy propose?

Which answer best matches this Ancient prompt? What was Ptolemy's major astronomical work called?