Brilliant government scientist Richard Seaton discovers a remarkable faster-than-light fuel that will power his interstellar spaceship, The Skylark. His ruthless rival, Marc DuQuesne, and the sinister World Steel Corporation will do anything to get their hands on the fuel. They kidnap Seaton's fiancée and friends, unleashing a furious pursuit and igniting a burning desire for revenge that will propel The Skylark across the galaxy and back.

"Triplanetary" is a science fiction novel and space opera by author E. E. Smith, published in 1948. It consists of two parts. The first explains the series background, which consists of a conflict between the evil Eddorians and the benevolent Arisians. This conflict is carried out throughout the history of an oblivious humankind on Earth. The final part of the book, which was originally published as a magazine story, takes up the tale after civilization has been rebuilt.

The Inter-Planetary Corporation has sent the space ship Arcturus on a routine fact-finding mission, only to have it ambushed by a strange alien craft, leaving physicist Steve Stevens and Nadia Newton first stranded on Ganymede, and then caught up in the Vorkul-Hexan war. A space adventure of staggering proportions by science fiction master writer E. E. “Doc” Smith.

There he was in his sailboat in the middle of the Atlantic, all alone and loving it. Well, there was a US Navy carrier group on his southern horizon, but he was a Navy guy himself, so he didn't mind. Then came the UFOs, hurtling in from the Outer Black to overfly the carriers at Mach 17. Their impossible aerobatics were bad enough—but then they started shooting at each other, and at the Navy, with nukes. Little ones at first, but winding up with a 500 megatonner at 90 miles that fried every piece of electronics within line-of-sight.

They were four of the greatest minds in the Universe: Two men and two women, all Psionic Primes, lost in an experimental spaceship billions of parsecs from home. And as they mentally charted the cosmos to find their way back to Earth, their own loves and hates were as startling as the worlds they encountered. Here is E. E. Smith's classic science fiction novel - one of the greatest space operas of all time!

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

In a world full of super powers, Felix has a pretty crappy one. He has the ability to modify any item he owns. To upgrade anything. Sounds great on paper. Almost like a video game. Except that the amount of power it takes to actually change, modify, or upgrade anything worthwhile is beyond his abilities. With that in mind, Felix settled into a normal life. A normal job. His entire world changes when the city he lives in is taken over by a super villain. Becoming a country of one city. A city state.

Jonathan Hoag has a curious problem. Every evening, he finds a mysterious reddish substance under his fingernails, with no memory what he was doing during the day to get it there. Jonathan hires the husband and wife detective team of Ted and Cynthia Randall to follow him during the day and find out. But Ted and Cynthia find themselves instantly out of their depth. Jonathan leaves no fingerprints. His few memories about his profession turn out to be false.

Travel to other planets is now a reality, and with overpopulation stretching the resources of Earth, the necessity of finding habitable worlds is growing ever more urgent. There’s a problem though—because the spaceships are slower than light, any communication between the exploring ships and Earth would take years.

Tom and Pat are identical twin teenagers. As twins they’ve always been close, so close that it seemed like they could read each other’s minds.

Nine hundred thousand years ago, something annihilated the Amarantin civilization just as it was on the verge of discovering space flight. Now one scientist, Dan Sylveste, will stop at nothing to solve the Amarantin riddle before ancient history repeats itself. With no other resources at his disposal, Sylveste forges a dangerous alliance with the cyborg crew of the starship Nostalgia for Infinity. But as he closes in on the secret, a killer closes in on him because the Amarantin were destroyed for a reason.

Jim Marlowe and his strange-looking Martian friend, Willis, are allowed to travel only so far. But one day Willis unwittingly tunes in to a treacherous plot that threatens all the colonists on Mars, and it sets Jim off on a terrifying adventure that could save - or destroy - them all.

Don Harvey is a citizen of the Interplanetary Federation - yet no single planet can claim him as its own. His mother was born on Venus and his father on Earth, and Don himself was born on a spaceship in trajectory between planets. When his parents abruptly summon him away from school on Earth to join them on Mars, he has no idea he's about to be plunged into deadly interplanetary intrigue. But the ship Don is traveling on is unexpectedly diverted to Venus, where the colony has launched a revolution against Earth's control.

. C. “Scar” Gordon was on the French Riviera recovering from a tour of combat in Southeast Asia, but he hadn’t given up his habit of scanning the personals in the newspaper. One ad in particular leapt out at him: "Are you a coward? This is not for you. We badly need a brave man. He must be 23 to 25 years old, in perfect health, at least six feet tall, weigh about 190 pounds, fluent English with some French, proficient with all weapons, some knowledge of engineering and mathematics essential...."

Get ready to experience two more origin stories in the Backyard Starship universe.

The totalitarian East has triumphed in a massive invasion, and the United States has fallen to a dictatorial superpower bent on total domination. That power is consolidating its grip through concentration camps, police state tactics, and a total monopoly upon the very thoughts of the conquered populace. A tiny enclave of scientists and soldiers survives, unbeknownst to America’s new rulers. It’s six against six million - but those six happen to include a scientific genius, a master of subterfuge and disguise who learned his trade as a lawyer-turned-hobo, and a tough-minded commander....