Ryland Grace has been asleep for a very, very long time. He's just been awakened to find himself millions of miles from home, with nothing but two corpses for company. He can't remember his own name, let alone the nature of his assignment or how to complete it. Alone on this tiny ship that's been cobbled together by every government and space agency on the planet and hurled into the depths of space, it's up to him to conquer an extinction-level threat...

The Overlords appeared suddenly over every city - intellectually, technologically, and militarily superior to humankind. Benevolent, they made few demands: unify earth, eliminate poverty, and end war. With little rebellion, humankind agreed, and a golden age began." "But at what cost? With the advent of peace, man ceases to strive for creative greatness, and a malaise settles over the human race. To those who resist, it becomes evident that the Overlords...

An unstoppable extinction level event (ELE) approaches the Earth.This impending disaster emanates from within our own solar system, yet to be formally identified by astronomers, is the vast planet named Ark. The 3400 year orbital path of this colossal Earth-like celestial body maintains catastrophic potential which is capable of destroying human life as we know it. For a privileged few, preparations have been under way for many years to save their...

Earth is threatened by the invasion of an interstellar research probe gone mad, in an imaginative study of the complex interactions--and their ramifications--between human passions and the inflexible equations of science.

The first sounds came at midnight in a plaintive scream from an unknown voice in the vastness of space. Within hours, the entire world heard the eerie throbbing. And in billions of earthbound minds the horror grew. Hours later, to the ears of a helpless world, the second message came...Earth's days were numbered! Murray Leinster's horrifying epic of science fiction is still a thrilling read, 50 years after its original publication!

The first and shortest version was published in Beyond Fantasy Fiction in July 1954 under the title "No More Stars" with the pseudonym Charles Satterfield. It first appeared in book form in 1963 with Badge of Infamy as "Two Complete Novels" in a Galaxy paperback original. The first book-length version was published in 1973 by Ace Books. Computer engineer Dave Hanson is transported from Earth to a world where the rules of science and physics are replaced...

Only children can colonize the planet Prokaryon, genetically modified for a world whose chemistry kills unaltered adults. A colony of orphans struggles to survive, and finds the planet hides strange secrets.The Prokaryan landscape is ordered, as if by unseen gardeners, hidden "masters" no human has ever found. The weather behaves as though designed to meet the planet's needs. When fire threatens a forest, a rainstorm appears, only to dissipate when...

A masterpiece of stories by H. G. Wells, masterfully tied together by time and place. First, a shop owner named Mr. Cave, enraptured by a crystal egg, struggles to find a way to keep his magical possession... Then we are, taken to a time when cave people struggled to find their place on the planet and keep their lives. The forward to the far future where, in the place the cave people once camped, a young couple's back are, bowed beneath the tyranny...

In a future time, the solar system is powered by one energy source, controlled by one huge organisation, which has plans to use this control to dominate the planets. Unknown to them, a couple of maverick scientists accidentally develop a completely new form of energy supply and threaten the corporation's monopoly. Naturally, the corporation can't allow this to happen... A stunning story about the manipulation of pure energy, climaxing in interstellar...

With an asteroid on a collision course with Earth, Doctor Toby Glyer and his partner William Connors must find a way to make contact with their wayward children -- the Briareus nanites -- and save the planet.