Multiple choice general knowledge

Galileo was an italian astronomer who.

  1. Developed Telescope

  2. Discovered four satellite of jupiter

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

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

Galileo Galilei made all three contributions listed: he developed (improved) the telescope for astronomical use, discovered four moons of Jupiter (Io, Europa, Ganymede, Callisto), and discovered pendulum isochronism. His work founded modern physics and astronomy.

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