What does this number measure?
An interval of empty space far larger than either body. The Earth–Moon distance varies along the orbit; the value shown is an average between their centres. The celestial silhouettes in the diagram may be enlarged to remain readable.
Compare the stated dimensions
The comparison uses the number in each fact sheet: altitude, height, diameter, length or distance, depending on the reference. Two values in metres do not necessarily describe the same property.
Source and limitations
Catalogue order of magnitude; a source is provided, but this measurement has not been individually audited.
Earth–Moon distance: a horizontal diagram of a mean centre-to-centre separation; celestial bodies enlarged and arrows placed between their silhouettes, without a common scale.