Who was Galileo? When did he live? What did he do? 

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Galileo Galilei was born in 1564 in Pisa, Italy and died in 1642, near Florence. He was an astronomer and physicist (among other things). His most important contributions to science are listed below:

  • He made various observations with his telescope, including the four moons of Jupiter, phases of Venus, sunspots,...

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Galileo Galilei was born in 1564 in Pisa, Italy and died in 1642, near Florence. He was an astronomer and physicist (among other things). His most important contributions to science are listed below:

  • He made various observations with his telescope, including the four moons of Jupiter, phases of Venus, sunspots, etc. His observations confirmed the hypothesis of Copernicus and disproved the Church's view of our Universe.
  • He laid the foundation for Newton's work on gravity (and his laws of motion) by formulating the concept of inertia (that helps a body resists any change in its state of motion).
  • Another contribution to physics was the experiment related to acceleration due to gravity (Leaning Tower of Pisa experiment), which showed that irrespective of weight, any two (or more) objects will fall to the Earth's surface at the same time, when dropped from a height. 

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