Moon and Earth to Scale

The diameter of the Moon is 3480 km or 27% of the Earth's equatorial diameter of 12,756 km. The mass of the moon is 1.23% of the mass of the Earth, or about 1/80th. The density of the Moon is 3.34 g/cm³ compared to 5.52 g/cm³ for the Earth, so its overall composition is quite different, apparently lacking a large iron core.

The Sun's diameter of 1,392,000 km is 109 times the Earth's equatorial diameter of 12,756 km. The distance to the Earth from the sun at 149,000,000 km = 1 AU is 107 times the diameter of the Sun and 388 times the Earth-Moon distance. The Earth-Moon distance is not shown to scale in the above composite. The diameter of the Sun is 3.6 times the Earth-Moon distance. Above, the Earth and Moon are scaled relative to an image of the Sun made by the SOHO satellite on January 12, 2007.