Tom Swift III Series by Victor Appleton, Robert E. Vardeman

Despite attempts to sabotage his newly-invented fusion drive spacecraft, a young scientist investigates the sinister, eminent head of the space colony who is hiding serious flaws in his own new craft.

Tom Swift and his friends Ben and Anita travel with their new robot, Aristotle, to the moons of Jupiter where they encounter a sinister rival.

An alien probe found wrecked on one of Jupiter's moons and containing insane "intelligence" is stole from a laboratory before its secret of stardrive is obtained.

In the first hyper-drive spacecraft, Tom, Ben, and Anita try to make contact with an alien race that built a probe.

When Tom Swift and his crew jump back from the Alpha Centauri system through hyperspace to the Earth's galaxy, they are captured by their arch enemy David Luna and taken prisoner aboard his astral fortress.

Tom and his friends find themselves in the hands of unfriendly robots who are trying to eliminate all biological life from their planet.

Tom Swift and his crew travel to the planet Aquilla to recover SeaGlobe, an ecological system stolen from the space colony New America.

Tom Swift and his crew are instrumental in delivering the planet Verita from a nuclear holocaust.

Tom Swift, aboard the science survey ship "Hawking," discovers unusual sunspot activity indicating the sun will soon explode, destroying all life in the solar system.

Mr. Swift takes several guests, Tom, and his friends, to a mining planet owned by his company, but what begins as a vacation becomes a nightmare.