Question

Which describes one way that Aristarchus's explanation of the movement of objects in the sky was different from
other scientists' earlier explanations?

A) He discovered Venus's phases.

B) He argued that Earth rotates on its axis.

C) He explained the concept of retrograde motion.

D) He described the epicycles of the planets in the sky.​

Answer 1

D) He described the epicycles of the planets in the sky.