Galileo was an Italian astronomer who _________?
Correct answer: D. All of the above
- A. Developed the telescope
- B. Discovered four satellites of Jupiter
- C. Discovered that the movement of pendulum produces a regular time measurement
- D. All of the above
Explanation
Galileo improved the telescope for astronomy, discovered four large moons of Jupiter, and studied the regular timing of a pendulum's swing. In the usual school-level wording, all three statements are credited to him.
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