Earth vs Ross 128 b
Ross 128 b is about 1.1 times as wide as Earth and they sit at a similar temperature. Earth is the closer of the two to Earth, with an Earth-similarity index of 1.00.
| Earth | Ross 128 b | |
|---|---|---|
| Type | Rocky world | Rocky world |
| Size (radius) | 1.00 R⊕ | 1.11 R⊕ |
| Surface gravity | 1.00× Earth | ≥ 1.14× Earth |
| Equilibrium temperature | 15°C (59°F) | 28°C (82°F) |
| Year (orbital period) | 365 days | 9.9 days |
| Distance from Earth | in our solar system | 11.0 ly |
| Earth-similarity index | 1.00 | 0.87 |
Common questions
Is Earth bigger than Ross 128 b?
Ross 128 b is the larger of the two: Earth is 1.00 R⊕ across and Ross 128 b is 1.11 R⊕, where Earth is 1 R⊕.
Which has stronger gravity, Earth or Ross 128 b?
Ross 128 b pulls harder: surface gravity is 1.00× Earth on Earth and ≥ 1.14× Earth on Ross 128 b.