Abstract
This article is aimed at studying the cosmological problem, the concepts of "nothingness" and "chaos" as interrelated elements; solving this issue in an ontological system. The leading methods of studying this problem are methods of comparative analysis, descriptive method, basic principles of cognitive methodology, principles of dialectical logic, synergetic analysis, induction, deduction. The article identifies aspects of the development of cosmogenesis as a philosophical problem of modernity; analyses the specific features of nothingness and chaos and their harmony. The materials of the article are of practical and theoretical value for philosophers, theologians, historians, specialists in the field of ontological anthropology.