Earth-Ganymede-Moon size comparison

Earth-Ganymede-Moon size comparison

Size comparison of Earth, the Moon, and Ganymede.

The radius of Earth at the equator is 6,378 kilometers (3,963 miles). Ganymede has a mean radius of 2634.1±0.3 km (about 1636 miles, 0.413 Earths). Moon’s radius is 1,737.1 km (1079 mi).

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