> While the moon is an estimated 2,159 miles (3,475 km) in diameter [...]
Is the article implying that we don't know the Moon's (I assume they're referring to the capital-M one) diameter to at least kilometer-precision...?
It’s an irregularly shaped body so there’s not one single radius. Mean radius is always going to be an approximation (even for Earth); the mean radius of the Moon is 1,737.4 km.
It’s an irregularly shaped body so there’s not one single radius. Mean radius is always going to be an approximation (even for Earth); the mean radius of the Moon is 1,737.4 km.