This cross-sectional illustration shows the interior of Jupiter's largest moon Ganymede, based on theoretical models, in-situ observations by NASA's Galileo orbiter, and Hubble Space Telescope observations of the moon’s magnetosphere.
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THE UNIVERSE The Universe is extremely vast. It consists of space, energy and matter. In this unwrap space there are galaxies, solar systems and other space bodies orbiting around each other. Such space bodies in solar systems are stars, planets, asteroi
This "family portrait" is a composite of the Jovian system: the edge of Jupiter with its Great Red Spot + Jupiter's 4 largest moons, known as the Galilean satellites. The moons (top-to-bottom): Io, Europa, Ganymede and Callisto.