When we talk about satellites, we often think of artificial machines orbiting Earth. However, natural satellites are moons that orbit planets. The biggest natural satellite in our entire solar system belongs to the giant planet Jupiter.
Ganymede is composed of approximately equal amounts of silicate rock and water ice.
It takes Ganymede about seven Earth days to orbit Jupiter once.
The second-largest moon in the solar system is Titan, which orbits Saturn.
The biggest satellite in the solar system is Ganymede. It is one of the 95+ moons orbiting the planet Jupiter. It was discovered by the famous astronomer Galileo Galilei in 1610.
Ganymede is completely unique because it is the only moon in the solar system that has its own magnetic field. This magnetic field causes auroras (glowing ribbons of electrified gas) at the moon's north and south poles. Scientists also strongly believe that Ganymede has a massive saltwater ocean hidden beneath its thick, icy crust.
Currently, no. Ganymede has a very thin oxygen atmosphere, no breathable air, freezing temperatures, and is blasted by extreme radiation from Jupiter.
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