The Moon — The Vasin-Shcherbakov Spaceship Moon Hypothesis 1970

The Moon — The Vasin-Shcherbakov Spaceship Moon Hypothesis (1970)

The Authors and Publication

Field	Detail
Authors	Michael Vasin and Alexander Shcherbakov
Affiliation	Soviet Academy of Sciences
Publication	"Is the Moon the Creation of Alien Intelligence?" published in Sputnik magazine (the Soviet equivalent of Reader's Digest) in 1970
Date	1970 — the year following the first Apollo Moon landings
Core claim	The Moon is not a natural satellite but a hollowed-out planetoid, steered into Earth orbit by an extraterrestrial civilisation of unknown origin
Western attention	Reported in the West in 1970; subsequently popularised by Don Wilson (Our Mysterious Spaceship Moon, 1975) and numerous subsequent authors

The Hypothesis

Vasin and Shcherbakov proposed that the Moon is an artificially constructed spacecraft — a hollowed-out world with a thick metallic shell, placed in orbit around Earth by a technologically advanced extraterrestrial civilisation. They marshalled a series of physical anomalies as evidence:

The ringing seismic response: When Apollo 12 crashed its lunar module onto the Moon, the Moon vibrated like a bell for approximately 55 minutes. A solid body of that mass would not vibrate for this long; a hollow metallic shell would.

Crater morphology: Lunar craters are shallower than impact physics predicts for their diameter. The deepest craters are only about 4–5 km deep regardless of their size. Vasin and Shcherbakov argued this reflects a rigid metallic shell beneath a relatively thin regolith layer — impacts penetrate the regolith but cannot penetrate the shell below, producing shallow craters with convex floors.

The density anomaly: The Moon's average density (3.344 g/cm³) is lower than the density of the surface rocks (approximately 3.6–3.9 g/cm³ for basaltic material). A solid body whose surface material is denser than its bulk average must have a less-dense interior — consistent with a hollow or partially hollow structure.

The orbital coincidences: The Moon's near-circular orbit, its precise eclipse geometry, and its tidal locking are all cited as characteristics more consistent with deliberate positioning than natural formation.

The age of the rocks: The ancient age of lunar surface materials — older than most Earth rocks — is cited as evidence of a structure built or assembled from very old material.

The Scientific Response

The mainstream scientific community rejected the Vasin-Shcherbakov hypothesis for multiple reasons:

• The moment of inertia factor (0.394) is inconsistent with a hollow body — a hollow metallic shell would have a moment of inertia factor significantly above 0.4
• The Giant Impact Hypothesis, developed in the 1970s, provides a naturalistic formation mechanism that accounts for many of the Moon's unusual properties
• The shallow crater morphology reflects the extremely rigid, cold lunar crust — not a metallic shell; large impactors are destroyed by the impact energy before they can penetrate deeply, and the crater depth is limited by the competence of the target rock, not by a buried barrier
• The seismic long-ringing reflects the Moon's extreme dryness, not a hollow interior

Legacy and Influence

The Vasin-Shcherbakov hypothesis is dismissed by mainstream planetary science but has had an outsized influence on popular culture and conspiracy literature. It established the vocabulary and the primary argument structure for all subsequent artificial Moon theories. Don Wilson's popularisation of the hypothesis in 1975 brought it to American audiences, and it has been cited in UFO, ancient alien, and conspiracy literature continuously since.

The hypothesis is notable as a formally presented academic speculation by Soviet Academy scientists — not a fringe internet theory but a structured argument by credentialled researchers, however much their methodology and conclusions have been rejected.