The book "Mars and its canals" was written by the American astronomer Percival Lovell and was first published in 1906. In this work, the author examines observations of the Red Planet in detail and describes the phenomenon that caused the appearance and deciphering of the so-called "channels" on Mars. Lovell argues for his theory that these canals are an artificial structure created by intelligent beings. The book "Mars and its canals" caused debate among scientists of its time and remains an important source for the study of the history of astronomy. The publication offers the reader to delve into Lovell's theory and consider his observations, which influenced further scientific research on Mars. "Mars and its canals" is a book that leaves a mark in the development of astronomy and helps to better understand the mystery of the planet of our solar system.