Which scientist, from Pisa, used a telescope to discover four moons of Jupiter in 1610?

Answer and explanation

Correct answer: B. Galileo Galilei

  1. Step 1: Galileo improved the telescope and observed Jupiter's moons, now called the Galilean moons. Step 2. His support for Copernicus led to a trial in 1633. Answer: Galileo Galilei. Why not the others: Torricelli invented the barometer, Volta the battery and Fermi built the first nuclear reactor.

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