Edited by . E. L. Ruskol . - M. : Science. Main edition of physical and mathematical literature, 1982. — 208 s, il. The book is popularly told about the world of natural satellites of planets (except the Moon) In recent years, our knowledge of these Solar System bodies has been greatly enriched, mainly as a result of research carried out with the help of spacecraft. Previously unknown moons and rings of Jupiter, Saturn and Uranus have been discovered, active volcanoes have been found on the satellites. The world of the satellites was extremely diverse in its properties .. All this is vividly and figuratively written by the author .. For a wide range of readers.