Galileo Galilei is credited with discovering four of Jupiter's moons. He made this and many other discoveries in 1610 after building his first telescope.Know More
When Galileo Galilei was a student, his father sent him off to the University of Pisa in the hopes his son would study medicine. However, Galilei had other plans and studied math instead. After graduating from the university, he stayed on as a math professor and made several important discoveries in physics. Galilei wrote "Principles of Inertia" which is similar to Newton's First Law.
Once he became interested in astronomy, he built his first telescope in 1609, which helped him discover Jupiter's largest moons. He also discovered many new stars, the phases of Venus, and sunspots. By looking at Venus's phases and sunspots, he came to the conclusion that the sun, like the Earth rotates and that all the planets orbit around the sun. This discovery came at a time when most people believed the Earth was the center of the galaxy and that all the planets revolved around it.
Galilei confirmed the studies of other famous scientists like Copernicus, and although he was chastised by the church for his findings, the church allowed him to continue with his work. Eventually, the church had enough, put him on trial for heresy and tried to force him to tell the world his findings were wrong. He refused and was first imprisoned and then later confined to his home.Learn more in Astronomy
Italian scientist Galileo Galilei died in Florence, Italy, on Jan. 8, 1642, after suffering from a fever and heart palpitations. He was 77 years old and blind at the time of his death.Full Answer >
After Galileo built his first telescope in 1609, he observed and described the landscape of the moon, discovered four of the moons of Jupiter, discovered the phases of Venus, and discovered sunspots. Galileo's discovery of sunspots supported the idea of heliocentrism, a model that places the sun at the center of the universe with the planets orbiting around it.Full Answer >
Galileo Galilei was a famous Italian astronomer, engineer, physicist, philosopher and mathematician who lived between 1564 and 1642. He advocated many advances in science and astronomy and played a key role in the Scientific Revolution. Later in life he was sentenced to house arrest by the Holy Office and wrote one of his best works "Discourses and Mathematical Demonstrations Relating to Two New Sciences."Full Answer >
A moon is a natural satellite consisting of solid material that naturally orbits a planet or dwarf planet. Although the Earth has just one moon, there are other planets that have more, and some that even have none. Moons and their planets often have very symbiotic, or close relationships.Full Answer >