Which is the Largest Moon in the Solar System?

Question: Which is the largest moon of any planet in our solar system?

Answer: Jupiter’s moon Ganymede is the biggest in the solar system and is in fact even larger than the planet Mercury, though Ganymede has less mass.

Ganymede is about 75% the size of Mars and is also the only moon which is able to internally generate it’s own magnetic field.

The huge moon completes an orbit of the gas giant Jupiter approximately once every seven Earth days.

This massive moon was first discovered in 1610 by Galileo while observing Jupiter through his early, self-made telescope.

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