This study examines the overlapping confluence of post-Soviet necropolitics and the ideological configurations of Russian Cosmism—a speculative tradition that has significantly influenced contemporary Russian intellectual discourse. It delves into how current death practices reveal emergent forms of vernacular authority over mortality, thereby redefining cultural sovereignty in ways that diverge from analogous Western contexts. Through empirical field research, this paper scrutinizes doctrinal and legal controversies regarding the preservation of deceased bodies, particularly those affiliated with Fëdorov's adherents, referred to as the "Fëdorovians," while also addressing disputes surrounding bodies preserved through cryoconservation methods. In its analysis of these phenomena, the research reconceptualizes Agamben's concept of bare life (1995) alongside Mbembe's framework of necropolitics (2003), positing that "bare life" should be reinterpreted as a site of resistance manifested through cosmist rituals and collective memory practices—especially in scenarios where conventional legal frameworks inadequately address the complexities introduced by emerging biotechnologies and novel religious practices. Thus, this legal threshold necessitates reevaluation within the post-Soviet milieu, wherein the cultural and political revival of Cosmism serves as a countervailing force against biopolitical oppression and death politics. Through a discussion on Agamben's philosophy, this paper elucidates that political existence and mortality are not binary oppositions but rather fluidly negotiated within post-Soviet society, revealing new pathways for understanding resistance, memory, and concepts of immortality.