Lavie Tidhar's space opera sci-fi tale "In Xanadu" is a Tor.com Original.
Security through physicality.
Security through redundancy.
Security through obscurity.
How do immortal artificial intelligences defend themselves? With an air gap. With a security force that has no connection to anything that can harm them. With a young woman, trained to fight and to die who, along with her cohort, must keep them

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The adrenaline-fueled, explosive conclusion to the Indranan War trilogy by K. B. Wagers.Gunrunner-turned-Empress Hail Bristol was dragged back to her home planet to take her rightful place in the palace. Her sisters and parents have been murdered, and the Indranan Empire is reeling from both treasonous plots and foreign invasion.Now, on the run from enemies on all fronts, Hail prepares to fight a full-scale war for her throne and her people, even...

The Earth is in a state of collapse, with wars breaking out over resources and an environment pushed to the edge by human greed. Three living generation ships have been built with a combination of genetic mastery, artificial intelligence, technology, and raw materials harvested from the asteroid belt. This is the story of one of them--43 Ariadne, or Forever, as her inhabitants call her--a living world that carries the remaining hopes of humanity,...

"Former gunrunner-turned-Empress Hail Bristol was dragged back to her home planet to fill her rightful position in the palace. With her sisters and parents murdered, the Indranan empire is on the brink of war. Hail must quickly make alliances with nearby worlds if she has any hope of surviving her rule. When peace talks turn violent and Hail realizes she's been betrayed, she must rely on her old gunrunning ways to get out of trouble. With help from...

A young apprentice, an alien academic, a caretaker for the dead, an archivist, and others wrestle with profound questions after their evacuation ship, carrying the last humans on Earth, finally reaches its destination.

Ender's Shadow explores the stars in this all-new novel... At the end of Shadow of the Giant, Bean flees to the stars with three of his children-the three who share the engineered genes that gave him both hyper-intelligence and a short, cruel physical life. The time dilation granted by the speed of their travel gives Earth's scientists generations to seek a cure, to no avail. In time, they are forgotten, a fading ansible signal speaking of events...

A novella set in the hard-scrabble world of James S. A. Corey's NYT-bestselling Expanse series, Gods of Risk tells the story of Bobbie Draper following the events of Caliban's War. This story will be available in the complete Expanse story collection, Memory’s Legion.
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As tension between Mars and Earth mounts, and terrorism plagues the Martian city...

"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. A strong defensive posture is futile, so Koenig will seize the initiative and turn the gargantuan Star Carrier...

"Vice Admiral Isaac Gallant is the heir apparent to the First Admiral, the dictator of the Confederacy of Humanity. Unwilling to let his mother's tyranny stand, he joins the rebellion and leads his ships into war against the might of his own nation. Betrayal and failure, however, see Isaac Gallant and his allies captured. Rather than execute her only son, the First Admiral instead decides to exile them, flinging four million dissidents and rebels...

"It is twenty-five years since China established the first colony on the moon, and the lives of three people are about to collide. American Fred Fredericks is making his first trip there, his purpose to install a communications system for China's Lunar Science Foundation. But hours after his arrival he witnesses a murder and is forced into hiding. It is also the first visit to the moon for celebrity travel reporter Ta Shu. He has contacts and influence,...