The Edge of the Knife, by H Beam Piper is one of the pivotal not felt was by Piper in his "Terra-Human Future History". Piper wrote this novella in 1957 at the height of the Cold War between the Soviet Union, and the United States of America, and seeing into the future could get you locked up in the sanitarium for dissolution all thinking. The protagonist, Charmers, a modern history professor has just such a problem.

A galactic war has left the Terran Federation in ruins. Formerly civilized planets have decivilized into barbarism. Space Vikings roam the wreckage, plundering and killing for gain. Lord Lucas Trask of Traskon was no admirer of the Space Vikings, but when murder takes his wife on his wedding day, Trask trades everything he has for his own Space Viking ship and sets out on a galaxy-wide quest for revenge.

So the Ulleran challenge begins, with the rantings of a prophet and a seemingly incidental street riot. Only when a dose of poison lands in the governer-general's whiskey does it become clear that the "geeks" have had it up their double-lidded eyeballs with the imperialist Terran Federation's Chartered Uller Company. Then, overnight, war is everywhere.

In what is considered one of Heinlein's most hair-raising, thought-provoking, and outrageous adventures, the master of modern science fiction tells the strange story of an even stranger world. It is 21st-century Luna, a harsh penal colony where a revolt is plotted between a bashful computer and a ragtag collection of maverick humans, a revolt that goes beautifully until the inevitable happens. But that's the problem with the inevitable: it always happens.

New York Times best-selling author Eric Flint has received glowing critical praise for his Ring of Fire alternate history series. In this first installment, a West Virginia town is transported from the year 2000 to 1631 Germany at the height of the Thirty Years’ War. Thrust into conflict, the town residents must also contend with moral issues such as who should be considered a citizen.

For Lt. Commander Colin Maclntyre, it began as a routine training flight over the moon. For Dahak, a self-aware Imperial battleship, it began millennia ago when that powerful artificial intelligence underwent a mutiny in the face of the enemy. The mutiny was never resolved - Dahak was forced to maroon not just the mutineers but the entire crew on prehistoric Earth.

The gigantic comet had slammed into Earth, forging earthquakes a thousand times too powerful to measure on the Richter scale, tidal waves thousands of feet high. Cities were turned into oceans; oceans turned into steam. It was the beginning of a new Ice Age and the end of civilization. But for the terrified men and women chance had saved, it was also the dawn of a new struggle for survival--a struggle more dangerous and challenging than any they had ever known....

The Mote In God's Eye is their acknowledged masterpiece, an epic novel of mankind's first encounter with alien life that transcends the genre. No lesser an authority than Robert A. Heinlein called it "possibly the finest science fiction novel I have ever read".

Imperial Intelligence couldn't find them, the Imperial Fleet couldn't catch them, and local defenses couldn't stop them. It seemed the planet-wrecking pirates were invincible. But they made a big mistake when they raided ex-commando leader Alicia DeVries' quiet home/work, tortured and murdered her family, and then left her for dead. Alicia decided to turn "pirate" herself, and stole a cutting-edge AI ship from the empire to start her vendetta. Her fellow veterans think she's gone crazy, the Imperial Fleet has shoot-on-sight orders. And, of course, the pirates want her dead, too.

Once Homo sapiens reigned supreme, spreading from star system to star system in an empire that encountered no alien life and thus knew no enemy.... save itself. As had happened many times before, the most primal human instincts rose up, only this time armed with the advanced scientific knowledge to create a genetically engineered smart virus that quickly wiped out humanity to the last man. That man is Ruslan, the sole known surviving human being in the universe.

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.

William Mandella is a soldier in Earth's elite brigade. As the war against the Taurans sends him from galaxy to galaxy, he learns to use protective body shells and sophisticated weapons. He adapts to the cultures and terrains of distant outposts. But with each month in space, years are passing on Earth. Where will he call home when (and if) the Forever War ends?

The best-selling, epic space adventure, Freedom's Fire: the complete series of six audiobooks, in one bundle.

alaxy. Humanity was slowly making their way out from Earth to the planets and asteroids of the Solar System, exploring and mining and founding colonies. The mining ship El Cavador is far out from Earth, in the deeps of the Kuiper Belt, beyond Pluto. Other mining ships, and the families that live on them, are few and far between this far out. So when El Cavador's telescopes pick up a fast-moving object coming in-system, it's hard to know what to make of it. It's massive and moving at a significant fraction of the speed of light.

In 1942, Lawrence Pritchard Waterhouse - mathematical genius and young Captain in the US Navy - is assigned to detachment 2702. It is an outfit so secret that only a handful of people know it exists, and some of those people have names like Churchill and Roosevelt. The mission of Watrehouse and Detachment 2702 - commanded by Marine Raider Bobby Shaftoe - is to keep the Nazis ignorant of the fact that Allied Intelligence has cracked the enemy's fabled Enigma code. In the present, Waterhouse's crypto-hacker grandson, Randy, is attempting to create a "data haven" in Southeast Asia....

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 enough to stay alive and smart enough to make the best of it. And when that kind of person discovers he's being cheated out of wealth he's risked his life for, that kind of planet is ripe for revolution.

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, developed it and reaped the huge profits from it without interference from the Colonial Government. Then Jack Holloway, a sunstone prospector, appeared on the scene with his family of Fuzzies and the passionate conviction that they were not cute animals but little people.

New Texas: its citizens figure that name about says it all. The Solar League ambassador to the Lone Star Planet has the unenviable task of convincing New Texans that a s'Srauff attack is imminent, and dangerous. Unfortunately it's common knowledge that the s'Srauff are evolved from canine ancestors - and not a Texan alive is about to be scared of a talking dog. But unless he can get them to act, and fast, there won't be a Texan alive, scared or otherwise.

In this story a galactic empire of thousands of planets has been at peace for hundreds of years. Production all across the empire is regulated to keep markets and economies stable. With this kind of system in place, why is there suddenly a plot to overthrow the current emperor, and who is behind it?

So the Ulleran challenge begins, with the rantings of a prophet and a seemingly incidental street riot. Only when a dose of poison lands in the governer-general's whiskey does it become clear that the "geeks" have had it up their double-lidded eyeballs with the imperialist Terran Federation's Chartered Uller Company. Then, overnight, war is everywhere.