Multiple choice general knowledge math & puzzles

Galileo was an Italian astronomer who:

  1. Developed the telescope

  2. Discovered 4 satellites of Jupiter

  3. Discovered that the movement of the pendulum produces a regular time measurement.

  4. All are correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Galileo Galilei made foundational contributions to science: he improved the telescope to observe the heavens, discovered the four largest moons of Jupiter (Io, Europa, Ganymede, and Callisto), and established that a pendulum's period is independent of its amplitude, leading to better timekeeping.

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