This paper explores the existence and significance of life in the universe within the context of human knowledge and technological advancement. Since the first human landing on the Moon, humanity has increasingly questioned its place in the vast expanse of billions of galaxies. Although direct evidence of life on other planets or exoplanets is still lacking, contemporary scientific belief suggests that life may be far more widespread in the universe than previously assumed. The text further analyzes the ethical and safety aspects of potential encounters with extraterrestrial life forms. Drawing from earthly experience, where life forms often exist in competitive or hostile relationships, the risk of mutual biological contamination is highlighted. The author warns of potentially fatal consequences resulting from the clash of different biospheres, both for humanity and for alien ecosystems where terrestrial organisms might be unintentionally introduced.