Fenris isn't a hell planet, but it's nobody's bargain. With 2,000-hour days and an 8,000-hour year, it alternates blazing heat with killing cold. A planet like that tends to breed a special kind of person: tough...
The chartered Zarathustra Company had it all their way. Their charter was for a Class III uninhabited planet, which Zarathustra was, and it meant they owned the planet lock stock and barrel. They exploited it,...
The Paratime Police had a real headache this time! Tracing one man in a population of millions is easy--compared to finding one gang hiding out on one of billions of probability lines!
To translate writings, you need a key to the code--and if the last writer of Martian died forty thousand years before the first writer of Earth was born ... how could the Martian be translated...?
The story of a confrontation between a human overlord and alien servants, with an ironic twist at the end. Like most of Piper's best work, Uller Uprising is modeled after an actual event in human history; in...
The last enemy was the toughest of all--and conquering him was in itself almost as dangerous as not conquering. For a strange pattern of beliefs can make assassination an honorable profession!
Was this ill-fated expedition the end of a proud, old race--or the beginning of a new one? There are strange gaps in our records of the past. We find traces of man-like things--but, suddenly, man appears, far...
There has always been strong sympathy for the poor, meek, downtrodden slave--the kindly little man, oppressed by cruel and overbearing masters. Could it possibly have been misplaced...?
To upset the stable, mighty stream of time would probably take an enormous concentration of energy. And it's not to be expected that a man would get a second chance at life. But an atomic might accomplish both--...
The Lane Fleming collection of early pistols and revolvers was one of the best in the country. When Fleming was found dead on the floor of his locked gunroom, a Confederate-made Colt-type percussion .36 revolver...
Hunting down the beast, under the best of circumstances, was dangerous. But in this little police operation, the conditions required the use of inadequate means!
Bishop Berkeley's famous question about the sound of a falling tree may have no standing in Science. But there is a highly interesting question about "sound" that Science needs to consider...
The alien spaceship was unthinkably huge, enormously powerful, apparently irresistible. It came from the void and settled on Earth, striking awe into the hearts of all who saw it. Its burden, however, was not...
It's natural to trust the unproven word of the fellow who's "on my side"--but the emotional moron is on no one's side, not even his own. Once, such an emotional moron could, at worst, hurt a few. But with the...
The Pleiades was Earth's first starship, and it could travel anywhere instantaneously -- but where it ended up could not be predicted... or even if the ship could return to Earth!
It was a week before the Lhari ship went into warp-drive, and all that time young Bart Steele had stayed in his cabin. He was so bored with his own company that the Mentorian medic was a welcome sight when he...
Alien technology scavenged by U.S. and Russian scientists has started a race to colonize planets outside our solar system -- and the U.S. scientists are losing! In a desperate move the U.S. government decides...
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