Copernicus did not first propose a heliocentric universe, nor was it proven by Galileo. The heliocentric idea first evolved in ancient Greece and was never officially proven by one man but rather over time, the general acceptance became higher of the idea as the ptolemaic charts became less accurate over time and the geocentric model became more complex to better fit the data.
Galileo proved nothing about the Sun being at the centre of the solar system, he only said he had a lot of proofs but the Cardinals of the Catholic Church were too stupid to understand them.
The proof came 100-150 years later after discoveries by Newton and others about the laws of motion and the law of gravity, when it was discovered that the Sun is much more massive than any of the planets.
He did not prove it. Galileo promoted Copernicus's model of the planets' orbits, which had the Sun at the centre and the Earth in orbit round it, but he did not accept Kepler's model which is the one we use today, which also puts the Sun at the centre.
At the time the theories just aimed to represent the observed positions of the planets as accurately as possible and there was no way of 'proving' which was correct. They were all reasonably good for predicting the positions of the planets although Kepler's model was the most accurate.
It was not until 50 years after Galileo's time that new discoveries were made with the theory of gravity and the laws of motion, and it was then that Kepler's theory of elliptical orbits was found to be consistent with the new theories and generally accepted.
It was when Galileo proved that the earth revolved around the sun and not the other way around. When? It was in the 17th century.
He published a book about his theory in the early 1500's but it was banned by the church because of blasphemy. The ban was not lifted until the 1800's.
The theory was publised in 1543, the year Copernicus died at the age of 70, 21 years before Galileo was born.
The discovery was published in 1543 but it was probably made about 20 years before that.
The planet Jupiter is known from many thousand years. Galileo Galilei discovered in 1610 only some sattelites (moons) of Jupiter.
2012
Jupiter was discovered by Galileo on January 7, 1610.
Galileo
He discovered Jupiter's four largest moons: Ganymede, Calisto, Io, and Europa.
Galileo discovered all three
My answer is four moons that Galileo found on or near Jupiter.
Jupiter was discovered by Galileo on January 7, 1610.
Europa was discovered in 1610 by Galileo when he pointed a telescope at Jupiter.
Galileo Galilei discovered Jupiter in 1610.
Galileo
Jupiter
Galileo.
Galileo
Galileo discovered Jupiter and three of its moons on January 7, 1610.
He discovered Jupiter's four largest moons: Ganymede, Calisto, Io, and Europa.
galileo discovered its moons
Galileo
Galileo discovered all three