About Callisto
Callisto is the second-largest moon of Jupiter and the third-largest moon in our solar system. With a heavily cratered surface, it stands out for its ancient landscape frozen in time. Unlike other Galilean moons, Callisto is not differentiated, showing diversity in its geophysical characteristics.
Interesting Facts
- Diameter: 4,820.6 km
- Orbital period: 16.7 Earth days
- Surface temperature: -139°C
- Callisto has the oldest and most heavily cratered surface in the solar system.
- The possibility of a subsurface ocean makes Callisto an interesting target for astrobiological studies.