The four giant moons of Jupiter were discovered by
A) Newton, in seventeenth-century England.
B) the Pioneer spacecraft, the first spacecraft to visit Jupiter.
C) Galileo, in seventeenth-century Italy.
D) Ptolemy, in ancient Greece.

Question

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Galileo discovered the four largest moons of Jupiter, known as the Galilean moons, in 1610 using his telescope, marking a significant moment in the history of astronomy.

The Four Giant Moons of Jupiter Were Discovered by