astronomyblog: The two largest satellites of Jupiter: Ganymede and Callisto Credit: NASA/JPL/

astronomyblog: The two largest satellites of Jupiter: Ganymede and Callisto Credit: NASA/JPL/
astronomyblog: The two largest satellites of Jupiter: Ganymede and Callisto Credit: NASA/JPL/

astronomyblog:The two largest satellites of Jupiter: Ganymede and CallistoCredit: NASA/JPL/ -- source link
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