The rings of Saturn
SCIENCE FICTION-THE SIXTH SPACE RANGER NOVEL-ACROSS MILLIONS OF MILES OF SPACE,THE SIRIAN ROBOT SHIPS RACED TO THE ATTACK.SWARMING OVER THE RINGS OF SATURN,THEY LAUNCHED THEIR WAR AGAINST EARTH.DAVID STARR SPACE RANGER,HASONLY ONE CHANCE OF AVERTING A GALACTIC HOLOCAUST.