This article proposes an expanded ontological analysis of the Moon by reintegrating traditional forms of knowledge—particularly Vedic cosmology—in which the Moon is understood as a threshold space between the temporal physical world and a non-temporal, etheric level of being. It is demonstrated that the liminal nature of the Moon was known to humanity since antiquity but was entirely excluded from the methodological framework of 20th-century lunar missions, including the Apollo program. On this basis, the paper advances the thesis that a purely technical approach to threshold cosmic environments is ontologically incomplete and intrinsically risky. The article culminates in the formulation of a rigorous ontological criterion for admissible lunar missions grounded in epistemic proportionality rather than technological capability alone.
Oleg V. Yermakov (Sat,) studied this question.