The aim of the paper is to study the role of the mundane in contemporary culture based on the mundane science fiction (MSF). The term originated in 2004 thanks to «The Mundane Manifesto» by Geoff Ryman and his anonymous co-authors who argued for a focus on the modern science paradigm instead of dreams of outer space. The Manifesto outlines SF subgenre, where the setting is in the near future on the Earth or within the Solar System, excluding interstellar travel or contact with aliens. MSF suggests the believable use of technology and science, as it exists at the current time or a plausible extension of existing technology. There is a debate about the genre limits and its canonical works since it also covers cyberpunk, dystopia, etc. Remarkably, in the Soviet literature, such a genre called «near-future science fiction» existed in the 1940s and 1950s. It is a subgenre of «hard» SF focusing on the inventions useful for the national economy and lacking psychological depth of characters. This literature mostly had low artistic quality because of the Soviet ideological pressure and many limitations.The benefits of the paper are the following. First, the author distinguishes between two ma in approaches to SF, namely a more practical and literal reception and a more metaphorical reception. The former is characteristic of readers of realistic literature who try to find the true-to-life elements in SF blamed as escapism. The latter is close to the SF fans. However, blaming SF for escapism seems an excessive sociologizing of literature and ignoring the great role of metaphor in cultural development. Consequently, MSF is an effort to bridge a gap between SF and realistic literature. Second, the paper presents the first attempt to compare MSF to the Soviet «near-future SF». The author argues that since such a «near-future SF» occupies a niche in Western literature, it is a sign of the global changesthat are taking place during the lifetime of the current generation, bringing, in addition to progress, the acute threat of environmental catastrophe. Moreover, the role of neo Marxism, on the one hand, and technophobia, on the other hand, are emphasized. Third, for the first time the possible connections between MSF and the frontier myth important for the American national cultural mythology are studied. At the core of Kim Stanley Robinson’s novel «Aurora» (2015) and James Gray’s movie «Ad Astra» (2019), MSF is regarded as a rejection of the ideology «space: the final frontier». Both works shift the focus from the global to the personal, from the unusual to the mundane, from expansion and colonization to the internal problems. The author concludes that the anthropological turn occurs in SF as well: there is a loss of metaphor, allegory, and archetypal basis, an abandonment of escapism, Enlightenment utopianism, belief in progress, romanticism, and industrialism in favor of more realistic view on the future of humankind. Unfortunately, in many cases, «mundane» means not only «mature» but «boring» here, making SF more science than fiction.