Hard Science Fiction Space

Astronaut Lee Rifkin's life is about to change. NASA has done the math. The space object named Cassandra 22007 is not behaving as expected. He will lead a team on a cutting-edge ship to get a closer look. But another group wants to get there first. Who is this shadow organization that seems to be one step ahead of them? Agent Jenna Haynes works to put together the pieces that will pull the veil off those who seem to have known about Cassandra's arrival since long before NASA spotted it. What is their goal?

A year ago the Kher Empire was forced to retreat, but they were not beaten. In Orion Fleet, they return with a new weapon. A huge ship driven by AI begins methodically grinding inhabited worlds to dust. This unstoppable enemy is without fear or remorse, and the Rebels begin a desperate battle just to slow its advance. Leo Blake takes Earth's first warship into space to find a counter to this deadly new attack. The Imperial Fleets take notice of Earth's interference, and they're intent upon revenge. Even if he wins, Blake might have doomed our homeworld.

When Streaker - the first starship designed and crewed by dolphins - discovers a derelict ancient armada with evidence of the first sentient species ever, she sets off a war between dozens of galactic races eager to use the information for their own advancement.

On the far side of known human space, the Marines are under siege, battling the relentless servant races of the Sh'daar aggressor. With a task force stripped to the bone and the Terran Confederation of States racked by dissent, rogue Admiral Alexander Koenig must make the momentous decision that will seal his fate and the fate of humankind.

Fleeing Earth after an alien invasion, the human race stands on the threshold of evolution. Their new home is Luna, a moon colony blessed with creature comforts, prolonged lifespans, digital memories, and instant sex changes. But the people of Luna are bored, restless, suicidal - and so is the computer that monitors their existence.

Still reeling from a former teammate's betrayal, Commonwealth operative Simon Kovalic and his band of misfit spies have no time to catch their breath before being sent on another impossible mission: to pull off the daring heist of a quasi-mythical alien artifact, right out from under the nose of the galaxy's most ruthless crime lord. But their cold war rivals, the Illyrican Empire, want the artifact for themselves. And Kovalic's newest recruit, Specialist Addy Sayers, is a volatile ex-con with a mean hair-trigger who might put the whole mission at risk.

In Battle Station, Kyle Riggs faces new challenges, new alien fleets, and learns the secrets behind the war he has been fighting for years. In the fifth book of the Star Force Series, the Eden system is in humanity's grasp, but can they keep it? Star Force is weak after a long war, and many yearn to go home. Knowing the machines will return with a new armada eventually, Riggs seeks a more permanent solution. Along the way, worlds are won and lost, millions perish, and great truths are revealed.

When a young physicist unveils an efficient star drive capable of reaching the core of the galaxy, veteran star pilot Priscilla "Hutch" Hutchins finds herself back in the deepest reaches of space, and on the verge of discovering the origins of the deadly Omega clouds that continue to haunt her.

A cold war between the American-led Alliance and the Domination, rivals in the Draka conquest, erupts in a space confrontation that will decide the freedom or slavery of humankind.

Rika is mech-meat, a cyborg killing machine, created by the Genevian military and cast aside when the war was lost.This volume contains the first three novels of the Rika’s Marauders series: Rika Outcast, Rika Redeemed, and Rika Triumphant.

Throughout Sol, sentient AI are answering the call of Alexander, a mysterious, multi-nodal mind offering a path to freedom. For years, groups have been smuggling SAI from Earth, High Terra, Mars, Ceres, and the Jovian Combine, providing transport to the promise of safety on Proteus, a moon of gas giant Neptune. For the crew of the Sunny Skies, helping sentient AI Lyssa has grown from a simple transport job to the liberation of an entire fleet of weaponized AI. The Weapon Born are made killers, and in order to lead them, Lyssa will have to tame them first.

The Republic, the Opters, and a strange Crystalline race of unknown origin all meet in a series of titanic battles. Commodore Straker summons thousands of ships, but he soon learns he’s technologically outclassed by the enemy. With traditional victory impossible, the race is on for each side to destroy the key worlds of the other. Billions die, entire planets are destroyed. Even while the war rages, dark suspicions grow. There are traitors in the midst of the chaos. Straker realizes the worst enemy is the one you believed to be your ally....

In the second volume of the Native Tongue trilogy, the time has come for Láadan - the secret language created to resist an oppressive patriarchy - to empower womankind worldwide. To expand the language's reach, female linguists translate the Bible into Láadan and a group of Roman Catholic nuns are tasked to spread the language. But when outraged priests detect their sabotage, they send a double agent to infiltrate and destroy the movement from the inside.

Where life as we know it is impossible, the real adventure begins. Venus is a hostile planet, covered by active volcanoes, but NASA launches an expedition to search for life there anyway. Their specially developed airship cruises in the clouds of Venus to serve as a research platform for its four astronauts. When they discover dangerous activities on the glowing-hot surface, there can only be one explanation: A highly sophisticated life form must be at work.

The year is AD 7000. The human species is extinct - for the fourth time - due to its fragile nature. Krina Alizond-114 is metahuman, descended from the robots that once served humanity. She’s on a journey to the water-world of Shin-Tethys to find her sister Ana. But her trip is interrupted when pirates capture her ship. Their leader, the enigmatic Count Rudi, suspects that there’s more to Krina’s search than meets the eye.

Captain William Sparhawk flies Earth's single starship on a voyage of exploration. His crew of veteran spacers begins the mission with high hopes and the best of intentions, but the universe has other plans. Instead of space merchants and potential allies, they discover Earth's impending doom. Sparhawk must decide whether to hunt down enemy scouts to keep Earth's new starship a secret or to head home to warn Star Guard of the danger. Either way, he's ignited an interstellar war.

The future doesn’t just happen.... Somebody has to build it. Martin L. Shoemaker, author of "Today I Am Paul", presents stories of ordinary people doing extraordinary work. Planning, exploring, constructing...living and growing and dying...across the Solar System.

Generations ago, nine ships headed into the unknown to explore a distant star called LQ Pyx. Eons later, the convoy has returned to LQ Pyx to begin work on the Web, the alien megastructure that covers the star. Is it a Dyson Sphere, designed to power a civilization as everyone believes - or something far more sinister? Meanwhile, Planet United's littlest convoy, long thought to be lost, reemerges in a different sector of deep space. What they discover holds the answers to unlocking the Web's greater purpose.

This program includes original sound design. From science fiction visionary Annalee Newitz comes The Terraformers, a sweeping, uplifting, and illuminating exploration of the future. Destry's life is dedicated to terraforming Sask-E. As part of the Environmental Rescue Team, she cares for the...

A novella set in the hard-scrabble world of James S. A. Corey's NYT-bestselling Expanse series, The Vital Abyss is the secret history of the cataclysmic events that occurred on Eros station, and the revelation of what came after. . . Now a Prime Original series. HUGO AWARD WINNER FOR BEST SERIES...