Galileo Galilei was the Italian astronomer, physicist, and engineer, who invented a telescope, proposed a theory on the solar system and is the father of observational astronomy.
What did Galileo discover by his telescope?
- Galileo used the telescope to observe the moon and its craters. He also proposed a theory that states that the sun is the center of the solar system and all the planets revolve around it.
- Galileo found out about Jupiter's four moons, which revolve around the planet.
- The discoveries of Galileo led to the founding of modern astronomy and the study of celestial objects.
Thus, Galileo discovered Jupiter's four moons.
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