The pages of the book tell about the star systems of the Universe, about our Galaxy, the planets of the Solar System, and examine the likelihood of catastrophic collisions of the Earth with other celestial bodies. You will learn about the structure of comets, meteorites and asteroids, about those that our planet has already encountered in the recent past and about those that still fly in limitless space, posing a threat to the Earth. On the pages of the publication you will read about the legendary planet Phaeton and the cosmic hypothesis of the disappearance of Atlantis, about research in the area of the Tunguska meteorite fall and the details of the meteorite fall near Chelyabinsk.