Question

which describes one way that aristarchus’s explanation of the movement of objects in the sky was different from other scientists’ earlier explanations? he discovered venus’s phases. he argued that earth rotates on its axis. he explained the concept of retrograde motion. he described the epicycles of the planets in the sky.

Explanation:

Aristarchus proposed Earth - axis rotation, different from earlier views. Others like Venus phases discovery is attributed to Galileo, retrograde motion and epicycles were part of other models.

Answer:

He argued that Earth rotates on its axis.