Speculative fiction is a broad umbrella category of narrative fiction referring to any fiction story that includes elements, settings and characters whose features are created out of imagination and speculation rather than based on attested reality and everyday life. That encompasses the genres of science fiction, fantasy, science fantasy, horror, alternative history, and magic realism.
From the undiscovered worlds to the aliens lurking among us, Robert
Silverberg here demonstrates his own unlimited imagination that
succeeds in making fantasy as real, as acceptable as the ordinary world