About the book: 2016 / Journey to the Sun and the planet Mercury and to all visible and invisible worlds. - B. m.: Salamandra PVV, 2016. - 52 p. (Polaris: Travel, adventure, fantasy. Issue CXLV). The book includes a small fantastic story “Journey to the Sun and to the Planet Mercury and to All Visible and Invisible Worlds” and “Talks of Moscow Residents about the Comet of 1832” - the fruits of the leisure time of an official-writer of the 1830s. D. I. Sigova. Both works, being republished for the first time, were inspired by fears of the “doomsday” and the destruction of the Earth as a result of a collision with Comet Biela. SF, Early Russian SF, Comet Fears, SF, early Russian SF. comet fears