Bursting right through the four-dimensional travel zone of subspace, Tellurian psiontists make an amazing discovery on the other side. Beyond the bounds of subspace, a parallel universe is cruelly ruled...

The future of mankind is in the hands of the legendary Corps of One Hundred, an elite body of warriors, selected and trained for the greatest honours in the empire of man. But there is something different...

Lord Tedric of the Marshes, ex-Corpsman, revered hero of the Empire and personal friend of the Emperor, is a traitor. Fugitive from the Security Forces, Tedric and his blue-furred alien friend Ky-Shan...

Tedric the hero had become Tedric the pirate... He looked at his strange companions: Philip Nolan, an aristocrat turned mutineer; Keller, a subman with canine ancestry; Ky-shan, a huge blue-furred alien;...

The ship was called the Pleiades, and it was Earth's first starship. It could travel instantaneously to literally anywhere in the universe - but that was just the trouble with it. For there was absolutely...

As the mighty spaceship Skylark roamed the intergalactic spaceways, scientist Richard Seaton and his companions found a world of disembodied intelligences. A world of four dimensions where time was insanely...

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...

Kim Kinnison, Number One man of his time, had faced challenges before - but rarely one as daunting as this. To him fell the perilous task of infiltrating the inner circle of Boskone, stronghold of galactic...

It was beginning to look as though no one could prevent the annihilation of the civilized Universe. For a weird intelligence was directing the destruction of all civilization from the icy depths of outer...

The space-pirates of Boskone raided at will, menacing the whole structure of interstellar civilization. Master-minded by a super-scientist, their conquering fleets outgunned even the mighty space cruisers...

Scientists Dick Seaton and Marc DuQuesne were the deadliest enemies in the galaxy. Their feud had blazed among the stars and challenged the history of a thousand planets. But now a threat from outside...

The Arisians, benevolent humanoids who have declared themselves Guardians of Civilization, war with the Eddoreans, shapeless, malevolent beings, hungry for power at any price. They fight on both physical...

From The SF Gateway, the most comprehensive digital library of classic SFF titles ever assembled, comes an ideal sample introduction to the fantastic work of E. E. 'Doc' Smith, one of the most influential...

A churning nuclear vortex, appearing out of nowhere, wreaking utter destruction - and countless numbers of them were menacing planets throughout the galaxy! 'Storm' cloud, nucleonic genius, set out in...

No human being had ever landed on the hidden planet of Arisia. A mysterious barrier, hanging unseen in space, turned back all ships. Then the word came to Earth, inexplicably but compellingly:GO TO ARISIA!Virgil...

In this exhilarating sequel to The Skylark of Space, momentous danger again stalks genius inventor and interplanetary adventurer Dr. Richard Seaton. Seaton's allies on the planet Kondal are suffering...

All the creative energies of the West have been directed into space exploration and development - dozens of new worlds are being opened up. Left behind on Earth are the sluggish remnants of former greatness....

When the Inter-Planetary Corporation's crack spaceliner Arturus took off on a routine flight to Mars, it turned out to be the beginning of a most unexpected trip to the unexplored moons of distant Jupiter....

Lord Tedric of the Marshes, ex-Corpsman and interplanetary warrior, faces a crucial mission: to crush the threat of the Destructive Forces by capturing their agent on the Bioman sphere, the ruthless Black...

They were four of the greatest minds in the Universe: Two men, two women, lost in an experimental spaceship billions of parsecs from home. And as they mentally charted the Cosmos to find their way back...

Somewhere among the galaxies is the stronghold of Boskone - a network of brilliant space-criminals whose hunger for conquest threatens the continued existence of all known civilisation.But where is this...

GALACTIC THREAT The awesome forces of the Empire of Earth have destroyed most of the evil conspiracy's fleet, including the ship bearing the ice-blooded Lady A, when the Family d'Alembert uncover a plot...

The Empire's boldest agents - Jules and Yvette d'Alembert - blast off against the most dangerous conspiracy in the Galaxy. But even the lightning-powers inherited from their triple-gravity planet are...

Classic space opera adventure, Book #7 in the "Family D'Alembert" series. For centuries, the planet Gastonia has been a planet of exile, an escape-proof prison world for the worst sorts of traitors. But...

THE MARCH OF THE ARMY OF THE JUST What is happening on Purity - an obscure planet peopled only by religious introverts? Hitherto the hairshirt brigade have turned their backs on the rest of the Empire....

THE LADY A OFFERS AN ALLIANCE Devastated by alien invasion, one of the Empire's far-flung planets - Omicron - is the destination for an astonishing mission. For the first time in many years, top SOTE...

Jules and Yvette d'Alembert had faced challenges before - but rarely one as daunting as this. To them fell the perilous task of infiltrating a vicious conspiracy which threatened to destroy the Stanley...

The Empire of Earth, spanning more than a thousand solar systems, is threatened by a conspiracy from within. Now, with more than three-quarters of the Galaxy ready to fall into enemy hands, the Empire...

Gone from the galaxy... A startling discovery has shaken Earth's galactic Empire: more than two hundred and fifty thousand people have vanished from the resort moon, Vesa, without a trace! Called to duty,...

The evil conspiracy of Lady A takes a new and mysterious turn when Grand Duke Zander von Wilmenhorst - the secret Head of SOTE - is implicated in a deadly plot against the Empire. And an enemy is impersonating...