The four largest and best known of Jupiter's 60+ moons. I can see these through my telescope!!! ❤️

The four largest and best known of Jupiter's 60+ moons. I can see these through my telescope!!! ❤️

callisto. one of jupiter's moons and one of my very favorite things in space. - Bing Images

callisto. one of jupiter's moons and one of my very favorite things in space. - Bing Images

Jupiter Moons - Callisto discovered by Galileo Galilei in 1610 using a telescope. It is thought to have oceans of liquid water beneath its crust. about the size of Mercury, is the 3rd largest moon in the solar system. It is more heavily cratered than any other moon in the solar system. Callisto remains as it was when it formed, during the period of intense meteoroid bombardment that the entire solar system experienced

Jupiter Moons - Callisto discovered by Galileo Galilei in 1610 using a telescope. It is thought to have oceans of liquid water beneath its crust. about the size of Mercury, is the 3rd largest moon in the solar system. It is more heavily cratered than any other moon in the solar system. Callisto remains as it was when it formed, during the period of intense meteoroid bombardment that the entire solar system experienced

Jupiter Moon Io, Jupiter Moon Picture, Io Picture -- National Geographic

Jupiter Moon Io, Jupiter Moon Picture, Io Picture -- National Geographic

#Jupiter Moon Io's many erupting #Volcanoes Revealed in New Map - -http://www.space.com/16108-jupiter-moon-io-volcano-map.html?PT_space

#Jupiter Moon Io's many erupting #Volcanoes Revealed in New Map - -http://www.space.com/16108-jupiter-moon-io-volcano-map.html?PT_space

Io in True Color: Jupiter's moon Io is intensely yellow is from sulfur and molten silicate rock. Its pocked surface is due to young, active volcanoes.

Io in True Color: Jupiter's moon Io is intensely yellow is from sulfur and molten silicate rock. Its pocked surface is due to young, active volcanoes.

Enceladus, one of Saturn's moons.  The Cassini spacecraft captured an image of plumes originating from the south pole of the icy moon with a very clear signature of small ice particles. There is possible evidence of Yellowstone-like geysers fed by reservoirs of liquid water.

Enceladus, one of Saturn's moons. The Cassini spacecraft captured an image of plumes originating from the south pole of the icy moon with a very clear signature of small ice particles. There is possible evidence of Yellowstone-like geysers fed by reservoirs of liquid water.

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