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Easy Galileo Galilei

Which Polish astronomer's Sun-centered model did Galileo publicly defend?

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Hard Galileo Galilei

In what year was the papal study commission on the Galileo case constituted?

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Hard Galileo Galilei

Which 19th-century mathematician later gave a framework for comparing infinite sets?

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Hard Galileo Galilei

What paradox compares positive integers with their square numbers?

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Intermediate Galileo Galilei

What government granted Galileo a 1594 patent for a horse-powered water pump?

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