This book includes three works by Isaac Asimov, rightfully recognized as classics of NF literature of the 20th century. The novel "The End of Eternity" tells about a timeless structure, called "Eternity", which includes specially trained and selected people from different centuries. The task of "Eternity" is to adjust the fate of mankind Nemesis is about a star of the same name hiding behind a dusty cloud halfway from the Sun to Alpha Centauri. Mankind is threatened with death, and the only way out is the development of the planet Eritro, which revolves around Nemesis. However, everything is not so simple - on this planet people are struck by a mysterious "erythronic plague" ..