
(If there’s a legitimate reason why the X-Wing has wings, it has not, to date, been adequately articulated.) Since science fiction derives much of its cachet from its habit of actually inspiring real scientific discoveries, the softer subgenres-space opera, space romance, most dystopian fiction, comedy, alternate history, etc.-are often quietly sneered at by purists. Soft science fiction is probably what most readers are familiar with, as it encompasses both Star Trek and Star Wars and focuses on character and plot without sweating the scientific detail.

Its ideal practitioner is an astrophysicist who has momentarily torn himself away his work at the Hadron Supercollider to popularize the cosmic mysteries he investigates day-to-day.

Hard science fiction is rigorously technological.
