Kingsley Amis

science fiction n.	1960 K. Amis New Maps of Hell 14 Science fiction is that class of prose narrative treating of a situation that could not arise in the world we know, but which is hypothesized on the basis of some innovation in science or technology, or pseudo-science or pseudo-technology, whether human or extra-terrestrial in origin.
space opera n.	1960 K. Amis New Maps of Hell ii. 44 In space-opera, Mars takes the place of Arizona with a few physical alterations, the hero totes a blaster instead of a six-gun.