Lucky Starr and the Moons of Jupiter (Lucky Starr #5)

Sabotage!!!

Agrav. It was the century's most important advance in space travel...and an experiment so revolutionary that only the men who huddled beneath the surface of Jupiter Nine were permitted to know its full meaning.

Yet someone else did know--knew everything, saw everything, head everything--and was diabolically sabotaging the top-secret mission.

Who or what the enemy was, Lucky Starr didn't know. but one thing was certain. The deadly force was not human...not even remotely human!

Lucky Starr and the Rings of Saturn (Lucky Starr #6)

Earth officials were hard on the heels of the mysterious Sirian spy, Agent X, when he blasted off in a stolen spaceship. But before they could catch him, the master spy jettisoned the capsule that held his report into the icy rings of Saturn. In a flash, Lucky Starr and Bigman Jones found themselves in a race with the Sirian war fleet to recover it.

When the Sirians couldn't find the capsule, they kidnapped Lucky and Bigman, bringing them to their secret military base on Titan. There the arrogant Sirian commander offered Lucky a terrible choice: turn traitor to Earth—or Bigman would die!

It was not an idle threat.

David Starr, Space Ranger (Lucky Starr #1)

Earth is on the brink of catastrophe. The vital foodstuffs supplied by its Martian colony are being poisoned. Working in secret, the ruling Council of Science sends David Starr, its youngest member, to the Martian farmlands to discover the truth behind the murders...

Lucky Starr and the Pirates of the Asteroids (Lucky Starr #2)

Twenty-five years before, Lucky Starr's parents had been destroyed during a pirate raid on the Terrestrial Empire. Now Lucky was a man, and an officer of the Council of Science. His ship was heavily armed, the pirates were at hand, the the time for sweet blaster vengeance was near!

Lucky Starr and the Oceans of Venus (Lucky Starr #3)

El sistema solar ha sido colonizado por la Tierra, unida bajo un solo gobierno presidido por el Consejo de Ciencias.

En las profundidades de los océanos de Venus, bajo inmensas cúpulas transparentes, los extraterrestres han contruido maravillosas ciudades submarinas. Pero un terrible enemigo amenaza con destruir las colonias humanas. Lucky Starr, agente especial del Consejo de Ciencias, habrá de enfrentarse solo a esta amenaza extraterrestre.

Lucky Starr and the Big Sun of Mercury (Lucky Starr #4)

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. The novel was first published by Doubleday & Company in March 1956. Since 1972, reprints have included a foreword by Asimov explaining that advancing knowledge of conditions on Mercury have rendered some of the novel's descriptions of that world inaccurate.