Lucky Starr and the Big Sun of Mercury is the fourth novel in the Lucky Starr series, six juvenile science fiction novels by Isaac Asimov that originally appeared under the pseudonym Paul French. It has been a year since the events in Lucky Starr and the Oceans of Venus, and in that time a government-funded research project, Project Light, is built at the astronomical observatory on Mercury's north pole to conduct research into the newly-discovered sub-etheric optics in hope of transmitting solar energy through hyperspace. The head of Project Light is the leading scientist in sub-etheric optics, Scott Mindes. A series of accidents has plagued Project Light, which David "Lucky" Starr and Bigman Jones have come to investigate.
Lucky Starr and the Moons of Jupiter takes place in the Jovian system.For six years, Jupiter IX has been the site of a secret project to develop an antigravity, or Agrav, space drive; but the Council of Science learns that information from the project is released to the enemy Sirians. A month after returning from Mercury, protagonists David "Lucky" Starr and John Bigman Jones are sent to Jupiter IX to investigate, bringing a V-frog to aid the investigation.
Lucky Starr and the Rings of Saturn is the final novel in the Lucky Starr series, six juvenile science fiction novels by Isaac Asimov that originally appeared under the pseudonym Paul French. The novel was first published by Doubleday & Company in 1958. It was the last novel to be published by Asimov until his 1966 novelization of Fantastic Voyage, and his last original novel until 1973's The Gods Themselves. Lucky Starr and the Rings of Saturn is the only novel by Asimov set in the Saturnian system. Six weeks after returning from the Jovian system, David "Lucky" Starr learns that Jack Dorrance, the chief of a Sirian spy ring uncovered by Starr in the Jovian system, has escaped from Earth.
Starr and his sidekick Bigman Jones follow Dorrance to the Saturnian system. . .