Question

who was first establish that the fact revolves round the sun

Answer 1

Heyy dear, here's your answer
In 1543, Nicolaus Copernicus published a new theory stating the earth revolves around the sun. This is known as the Copernican theory. This theory was considered a serious challenge to the Ptolemaic theory and the Roman Catholic Church. Copernicus died before he could prove his theory.

Answer 2

Copernicus was not the first to say that Earth revolves around the sun. In western civilization it was Greek astronomer Aristarchus of Samos is generally credited with being the first person to propose a sun-centred astronomical hypothesis of the universe.
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