In the context of the intensification of the confrontation between civilizations, the search for ethnocultural parameters of the Slavic world, the prospects for overcoming the systemic crisis in which its countries and peoples found themselves at the turn of the III millennium becomes important. Based on new historical facts and discoveries, the author puts forward a hypothesis of the cosmic nature of the universal flood that occurred in the 20th millennium BC, the Arctic center of ethnogenesis of the Slavic peoples and the entire Indo-European community.