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.Know More
Galileo studied and later taught mathematics at the University of Pisa. He helped to describe ballistics and presented his "Principle of Inertia." In 1632, Galileo presented his concept of basic relativity in physics, which later became the basis of Einstein's special theory of relativity.
In 1632, Galileo published a book openly supporting heliocentrism. He was later forced to publicly denounce his findings.Learn More
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.Full Answer >
Galileo is credited with discovering the first four moons of Jupiter, now known as the Galilean moons, of Io, Europa, Ganymede and Callisto. NASA Solar System Exploration explains that they are the four largest moons of Jupiter. Although not the first moons discovered, they were the first discovered through the use of a telescope.Full Answer >
While he did not invent the telescope, Galileo modified one of the devices before discovering a number of planets and moons, including Venus, which inspired a scientific revolution. His contention that Copernicus was correct about a heliocentric galaxy drew the ire of the Vatican, which believed the Earth was at the center of the galaxy. Galileo later published his findings, which resulted in his imprisonment.Full Answer >
Galileo is famous for many things but is probably best known for discovering Jupiter's four moons. The moons around Jupiter are called "Gallilean moons."Full Answer >