Callisto

Callisto is a moon of Jupiter and is where Eduard Kubikov studied before moving to Titan.

Description
Callisto was discovered in 1610 by Galileo Galilei along with 3 of other Jupiter's major moons. It was first explored in 1973 and became the target for the colonization of the Jovian System, due to its distance to Jupiter which would keep it safe from the gas giant's intense radiation. It was colonized in 2056, 4 years after being first stepped on by Humans in 2052 by a collaboration of the Russian, European, Indian and Japanese space program.

From

 * Callisto-Ganymede
 * Callisto-Titan
 * Callisto-Iapetus
 * Callisto-Mars

To

 * Ganymede-Callisto
 * Titan-Callisto
 * Mars-Callisto