What did Galileo discover?


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.

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.

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Ask.com Answer for: what did galileo discover
Galileo Galilei is best known for his many groundbreaking discoveries in the fields of astronomy, mathematics, physics and philosophy, and has been called the Father of Modern Science.
He was among the first to use a refracting telescope to observe the stars, and among the first to use a microscope to observe biological structures.
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