Studies of meteorites originating from inner Solar System bodies such as Mars and Vesta show that they have very different oxygen and tungsten isotopic compositions as compared to Earth, whereas Earth and the Moon have nearly identical isotopic compositions.
The isotopic equalization of the Earth-Moon system might be explained by the post-impact mixing of the vaporized material that formed the two, Similarly, the newly formed Moon would also have been affected and had its own lunar magma ocean; estimates for its depth range from about 500 km (300 miles) to its entire depth (1,737 km (1,079 miles)).
The prevailing hypothesis is that the Earth–Moon system formed as a result of the impact of a Mars-sized body (named Theia) with the proto-Earth (giant impact), that blasted material into orbit about the Earth that then accreted to form the present Earth-Moon system.
The far side of the Moon has a crust that is 30 mi (48 km) thicker than the near side of the Moon.
Such cultural influences can be found in language, lunar based calendar systems, art, and mythology.