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.
As Christopher and Clarice Wayville pilot the relativistic spacecraft Valkyrie toward
the inhabited fourth world of Alpha Centauria A, they prepare for the
first contact with an intelligent and benign marsupial species.