Celestial Objects
Callisto
Moon of Jupiter
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Callisto is Jupiter's second-largest moon and the third-largest moon in the solar system, the most heavily cratered body known in the solar system, with data from NASA's Galileo spacecraft suggesting it may hide a salty ocean beneath its ice crust.
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1. NASA Solar System Exploration
National Aeronautics and Space Administrationscience.nasa.gov, Jupiter Moons: CallistoQuote, science.nasa.gov, Jupiter Moons: Callisto
Data from NASA's Galileo spacecraft in the 1990s revealed Callisto may have a secret: a salty ocean beneath its surface.
1. NASA Solar System Exploration
National Aeronautics and Space Administrationscience.nasa.gov, Jupiter's Galilean MoonsQuote, science.nasa.gov, Jupiter's Galilean Moons
They are called the Galilean satellites after Italian astronomer Galileo Galilei, who is credited with their discovery in 1610.
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