Multiple choice general knowledge

Galileo was an Italian astronomer who

  1. developed the telescope

  2. discovered four satellites of Jupiter

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

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Galileo made groundbreaking contributions across multiple fields: he didn't invent the telescope but significantly improved it (1609), discovered Jupiter's four largest moons (now called Galilean moons), and established isochronism - that a pendulum's swing period is independent of amplitude, enabling precise timekeeping.

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