Shadowy view of Callisto
Source: NASA/Moore Boeck
Published: August 12, 2018

Version B of the Callisto installment of our solar system poster series. Callisto is a moon of Jupiter.

Callisto Poster
Optional back with a brief summary and galactic chart.

The posters are best printed on 11x17 paper. Several download options are available in the column on the right.

About the image: This mosaic of images from NASA's Voyager 1 spacecraft in March 1979 shows details as small as six miles (10 kilometers) across. Credit: NASA/JPL

On the Back

Callisto is the third largest moon in our solar system and is almost the size of Mercury. It is the outermost of the four large Galilean satellites. Callisto is the most heavily cratered object in our solar system. It is thought to be a long-dead world, with hardly any geologic activity on its surface — with a surface age of about 4 billion years, Callisto has the oldest landscape in the solar system. Like Ganymede and Europa, Callisto also shows strong evidence of an ocean deep under its icy surface.

Callisto is named for a woman turned into a bear by Zeus in Greek mythology – Jupiter to the Romans.

Explore Callisto in depth at https://solarsystem.nasa.gov/callisto

ENLARGE

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