 Similarly, Charles Stross says his Hugo Award-nominated novel "Saturn's Children" is "a space opera and late-period Robert A. Heinlein tribute", referring to Heinlein's "Friday".The theme and plot of Kameron Hurley's novel, "The Light Brigade" clearly echo those of Heinlein's "Starship Troopers".Even outside the science fiction community, several words and phrases coined or adopted by Heinlein have passed into common English usage