No other explanation for the Moon’s existence is presently put forward by science. It used to be thought that the Moon could be a captured asteroid but for all sorts of reasons this is now discounted. The only alternative explanation is the one we put forward: namely that the Moon was artifically created from material deliberately removed from the surface of the infant Earth. This sounds unlikely but will make more sense later when we talk about the very specific ‘size’ of the Moon. Exactly ‘how’ sufficient material was removed from the surface of the Earth to create the Moon is discussed in detail in our book ‘Who Built the Moon’.