When John Bandicut sets out across the surface of Triton, he's hardly ready for the storm of chaos that's about to blow through his life. The alien Quarx that soon inhabits his mind is humanity's first contact with an alien life. The Quarx, part of an ancient galactic civilization that manipulates chaos theory to predict catastrophic events, seeks to prevent a cometary collision that could destroy the Earth. But it must have help. If Bandicut chooses to trust the Quarx, he must break all the rules - indeed, sacrifice his own life.

Lucian has resolved to cast aside his ties to humanity, end his exile, and make his way back to his beloved celestial city. But what he finds when he arrives there is not what he expected: Mysterious beings all in black roam the cosmic pathways, most of the gods have somehow vanished, and those who remain look upon him with unadulterated suspicion and hate. His mission is this: he must clear his own name and find the true culprit, even as his brother and sister gods do everything in their power to capture and destroy him.

Penumbra, a haphazard city of outcasts, rebels, and malcontents, has floated around a dead planet in a backwater system for longer than living memory can recall. Its towers abandoned starships melded to an ancient, mysterious core, Penumbra is the last remnant of chaotic individualism in a galaxy where conformity to the will of the all-powerful Galactic Council is paramount.

In a space-faring civilization where a single woman is increasingly disenfranchised, the star pilot Silence Leigh is defrauded from her inheritance by a greedy competitor. Forced to ally with two men, Silence is dragged into a deadly political struggle, and is tantalized by the hints of the legendary Earth, as well as the dread and the glory of Magi's power. Her dreams of having her own ship and of escape from the Hegemony's oppressions take on new direction and focus when she joins the crew of "The Sun-Treader".

Everyone in Jacob's colony is born blind. It has always been this way. They embrace the philosophy of Truesight: Blindness brings unity, purity, and freedom. It is an exceptional community. Everyone is happy. As Jacob nears his thirteenth birthday, he anxiously anticipates his new role as an adult and all the changes that will bring. But as the day approaches, a far greater change threatens Jacob's future. It all starts with a searing pain in his eyes....

Charles Forbin has dedicated the last 10 years of his life to the construction of his own supercomputer, Colossus, rejecting romantic and social endeavors in order to create the United States' very first Artificially Intelligent defense system. Colossus is a supercomputer capable of taking in and analyzing data rapidly, allowing it to make real time decisions about the nation's defense.

This is the first book in the long out of print Five Worlds Trilogy by award-winning author Al Sarrantonio. As the 25th century draws to a close, Prime Cornelian, a ruthless usurper of Martian rule, will do anything to control all of human civilization, and the fate of all humankind is in the hands of the exiled King of Earth, Dalin Shar. Find more novels by Al Sarrantonio at Audible.com. Search Crossroad Press to find more titles by Al Sarrantonio and many other science-fiction, fantasy, horror, mystery, western and mainstream authors.

Prescient and scientifically accurate, Heart of the Comet is known as one of the great hard SF novels of the 1980s. First published in 1986, it tells the story of an ambitious manned mission to visit Halley's Comet, alter its orbit, and mine it for resources. But all too soon, native cells - that might once have brought life to Earth - begin colonizing the colonists. As factions battle over the comet's future - and that of Earth - only love, courage, and ingenuity can avert disaster and spark a new human destiny.

The raid on Sinskrill was a success, but the battle is only just beginning. William realizes the stakes at hand. He still has to find a way to prevent Lord Shet, the god of the mahavans, from returning to Earth from the faraway world of Seminal. If he doesn’t, Arylyn will be destroyed. But strange visions plague his mind: an albino monster who infects William with anger. It is Sapient Dormant, the Overward of the necrosed and tasked by Shet to recover a long lost talisman of power. 

Can a medieval prophet save the world from a future alien invasion? Gulatu Koza often looks to the heavens and imagines his eternal reward. But when his day of reckoning arrives, he wakes up to an Earth 800 years in the future. Above him, he’s shocked to see familiar stars sharing the sky with strange ships in flight. No sooner than he makes his peace with the curious new world and the alien colonists living alongside humans, a hostile fleet arrives with a bloody purpose. With Earth under attack, Gulatu struggles to help defend against an enemy. 

Conquered by the Jao twenty years ago, the Earth is shackled under alien tyranny - and threatened by the even more dangerous Ekhat, one of whose genocidal extermination fleets is coming to the solar system. The only chance for human survival is in the hands of an unusual pair of allies: a young Jao prince, newly arrived to Terra to assume his duties, and a young human woman brought up amongst the Jao occupiers. But, as their tentative alliance takes shape, they are under pressure from all sides.

In consequence of a number of stunning catastrophes, Arthur Dent is surprised to find himself living in a hideously miserable cave on prehistoric Earth. However, just as he thinks that things cannot get possibly worse, they suddenly do. He discovers that the Galaxy is not only mind-boggingly big and bewildering but also that most of the things that happen in it are staggeringly unfair.

On a planet code-named Gateway stands a mysterious portal to the past, the Guardian of Forever. Spock, Kirk, and McCoy have just returned from a voyage through the gateway with a young man named Zar - Spock's own son from ancient Sarpeidon! But while Spock and the brilliant, primitive youth try to bridge a gap of centuries and cultures, Gateway is seized by the Romulans...Featuring a dramatic reading by Leonard Nimoy and James Doohan, and enhanced with sound effects and an original score!

Accompanied by his faithful minidrag Pip and a most troublesome alien called Abalamahalamatandra - Ab for short - Flinx set out for Alaspin, the ruggedly primitive homeworld of his flying snake.There he hoped to find the giant man with the gold earring who somehow held the key to Flinx's mysterious past and to the strange powers he possessed. Chasing down his heritage was trouble enough, but Flinx didn't know what real trouble was until he realized that a deadly assassin squad was three steps behind him.

The harrowing search for Zonama Sekot is finally over for Luke Skywalker, Jacen Solo, and the others aboard the Jade Shadow. But joy turns to alarm when the living planet sends a defiant message: it refuses to follow them back to a galaxy full of war, exploitation, and misery. Meanwhile, Han and Leia must fight an unrelenting battle against staggering odds.