The idea that the moon is a map of the Earth stems from a fringe theory suggesting that the moon’s surface features, such as craters and maria (dark plains), are somehow reflective or representative of Earth’s geography. Proponents of this idea claim that the moon either mimics the landmasses and oceans of Earth or functions as a projection or mirror of Earth’s surface. This concept lacks scientific backing and is often linked to conspiracy theories or speculative pseudoscience.

In mainstream science, the moon’s surface features are understood as a result of its own geological processes and impacts from space debris over billions of years, unrelated to Earth’s physical geography.