Who invented the Telescope ?

Galileo Galilei

  • Galileo Galilei (1564-1642) was an Italian astronomer, mathematician, and philosopher.
  • He invented the Thermometer (1593), the Compass (1597), the Telescope (1609), and the Pendulum Clock (1641).
  • He was the first to use the telescope in the study of the heavens.
  • Galileo discovered Jupiter’s moons called Calisto, Europa, Ganymede, and Lo.

Galileo's Telescope Extends the Eye

Galileo Galilei

Galileo's Inventions

Galilean Moons

Galileo Galilei Timeline


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