Did Galileo believed that Earth was the center of the universe?

No, Galileo did not believe that the Earth was the center of the universe. He supported the heliocentric model proposed by Copernicus, which posited that the Earth and other planets revolve around the Sun. Galileo's observations, such as the phases of Venus and the moons of Jupiter, provided strong evidence for this model and challenged the geocentric view that placed Earth at the center. His findings ultimately contributed to the shift in scientific thought during the Renaissance.