Lucky Starr and the Rings of Saturn is set mostly within the Saturnian system, depicted as accurately as the knowledge of the late 1950s allowed.

Starr orders the pursuing Terrestrial fleet back to Earth; but returns with Bigman and Councilman Ben Wessilewsky to the Saturnian system.

As delegates assemble for the conference, Agas Doremo, the leader of the neutralist forces of the Galaxy, tells Conway they should let the Sirians stay.

Devoure then brings out Starr, who admits to having re-entered the Saturnian system after being warned off, and also that Wessilewsky established a base on Mimas.

Seeing the opportunity, Doremo points out the demonstrated implications of accepting the Sirian view; a war can start literally over every single rock.

In chapter 10, a Sirian character contrasts his own society with that of Earth: Starr retorts: At one point, Devoure threatens to have Bigman locked inside a ship without food and water, and then sent to his death by robots.

Since the society of Sirius is eugenically bred to be uniformly tall, the robot believes Devoure when he says the much shorter Bigman is not a human being.

The Naked Sun also discusses the possibility of robots being able to fight spaceships and bombard planets due to being unaware they have humans upon them.