Callisto vs Earth
Earth is about 2.6 times as wide as Callisto and Earth runs the hotter.
| Callisto | Earth | |
|---|---|---|
| Type | Rocky world | Rocky world |
| Size (radius) | 0.38 R⊕ | 1.00 R⊕ |
| Surface gravity | 0.13× Earth | 1.00× Earth |
| Equilibrium temperature | – | -19°C (-2°F) |
| Mean surface temperature | -139°C (-218°F) | 15°C (59°F) |
| Year (orbital period) | 11.9 years | 365 days |
| Distance from Earth | in our solar system | home |
| Earth-similarity index | 0.34 | 1.00 |
Common questions
Is Callisto bigger than Earth?
Earth is the larger of the two: Callisto is 0.38 R⊕ across and Earth is 1.00 R⊕, where Earth is 1 R⊕.
Which has stronger gravity, Callisto or Earth?
Earth pulls harder: surface gravity is 0.13× Earth on Callisto and 1.00× Earth on Earth.