Question

how do we know that the earth revolves around the sun n not vice ? ​

Answer 1

Answer:

Ptolemy moved the Earth from the centre of the Sun's path and introduced a point called the equant about which the Sun moved at a constant speed. ... The proof that it is the Earth moving and not the Sun came in the 1720s in the work of English astronomer James Bradley, who was later to become the Astronomer Royal.

Answer 2

Explanation:

Ptolemy moved the Earth from the centre of the Sun's path and introduced a point called the equant about which the Sun moved at a constant speed. ... The proof that it is the Earth moving and not the Sun came in the 1720s in the work of English astronomer James Bradley, who was later to become the Astronomer Royal.