Who discovered that all the planets go around the sun?

Answer 1

Galileo Galilei made this theory, because at the time, all scientists believed that the Earth was the center of the universe.

Answer 2

The discovery that all the planets go around the sun is attributed to Nicolaus Copernicus, a Polish astronomer in the 16th century. He proposed the heliocentric model, which placed the sun at the center of the solar system, with the planets orbiting around it. This model challenged the earlier geocentric model, which believed that Earth was the center of the universe.