J. A. Roni Sr. is a writer familiar to domestic readers mainly from his fascinating dilogy about the life of prehistoric people, “The Fight for Fire” and “The Cave Lion.” However, for science fiction lovers, this author is, first of all, one of the founders of science fiction, equal to Jules Verne and H.G. Wells, in whose works, almost for the first time in the history of science fiction, the theme of interplanetary travel arose, and the theme of global cataclysms befalling the Earth - and much more another, which has become a classic of the genre these days. Contents: Mysterious power (novel, translation by O. Krasova), pp. 5-116 Starfarers (novel, translation by K. Fenlar), pp. 117-182 The amazing journey of Gerton Ironcastle (novel, translation by G . Vesnina), pp. 183-344 The Destruction of the Earth (story, translation by K. Fenlar), pp. 345-410 Nympheas (story, translation by G. Vesnina), pp. 411-474 The Unknown World of Xypehuza (story, translation by G. Vesnina), pp. 477-500The Unknown World (story, translation by G. Vesnina), pp. 501-528Cataclysm (story, translation by G. Vesnina), pp. 529-542