The Planet Song Ganymede

Ganymede, the largest moon in the solar system, orbits Jupiter and is larger than Mercury and Pluto, slightly smaller than Mars. Discovered by Galileo in 1610, it would be classified as a planet if it orbited the Sun. Ganymede has a unique magnetic field, an iron-rich core, and a potential ocean beneath its surface. It takes about 7 days to orbit Jupiter and is approximately 4.5 billion years old. Its internal structure includes layers of ice and rock, with a solid iron core.

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