This is one of the first attempts to summarize and systematize numerous observations of unidentified flying objects spotted in recent years on the territory of our country. Without pretending to be a scientific analysis of the problem, the authors strive to give readers facts for independent reflection, to indicate search directions for enthusiasts who are trying to uncover the mystery of UFOs. A significant part of the materials used are little known or are being published for the first time. The book is written in an accessible way and is intended for a wide range of readers.