"In New York Times bestseller Extraterrestrial, Avi Loeb, Chair of Harvard's Astronomy Department, presented a theory that shook the scientific community: our solar system, Loeb claimed, had been visited by a piece of advanced alien technology from a distant star. This provocative and persuasive argument opened thousands of minds to the vast possibilities of our universe and the existence of intelligent life beyond Earth. But a crucial question remained:...

Astrobiology is the study of life in the universe from its origins to its evolution into intelligent sentient beings. All life as we know it is carbon-based, reliant on sources of liquid water and energy for its survival, and as far as we are aware, exists only on Earth. Our planet occupies a unique spot in the solar system. It is just the right distance from the Sun--within the so-called Goldilocks Zone--to be not too hot or too cold for liquid...

A Fire Upon the Deep is the big, breakout book that fulfills the promise of Vinge's career to date: a gripping tale of galactic war told on a cosmic scale. Thousands of years hence, many races inhabit a universe where a mind's potential is determined by its location in space, from superintelligent entities in the Transcend, to the limited minds of the Unthinking Depths, where only simple creatures and technology can function. Nobody knows what strange...

The past few years have seen an incredible explosion in our knowledge of the universe. Since its 2009 launch, the Kepler satellite has discovered more than two thousand exoplanets, or planets outside our solar system. More exoplanets are being discovered all the time, and even more remarkable than the sheer number of exoplanets is their variety. In Exoplanets, astronomer Michael Summers and physicist James Trefil explore these remarkable recent discoveries:...

A century after Captain Kidd's first expedition to Mars, Arabella Ashby is set to leave her Martian plantation home for London to learn to be a lady, until her home is threatened and she joins the crew of a Mars Trading Company ship disguised as a boy.

Nearly two centuries after the starship Phoenix disappeared into the heavens, leaving an isolated colony of humans on the world of the atevi, it unexpectedly returns to orbit overhead, threatening the stability of both atevi and human governments. With the situation fast becoming critical, Bren Cameron, the brilliant, young paidhi to the court of the atevi is recalled from Mospheira where he has just undergone surgery. But his sudden and premature...

"After nearly a decade away, Nebula Award-winning author Elizabeth Moon makes a triumphant return to science fiction with a thrilling new series featuring the daring hero of her acclaimed Vatta's War sequence. Summoned to the home planet of her family's business empire, space-fleet commander Kylara Vatta is told to expect a hero's welcome. But instead, she is thrown into danger unlike any other she has faced and finds herself isolated, unable to communicate...

"After years of waiting in the shadows, Darth Sidious is taking the first step in his master plan to bring the Republic to its knees. Key to his scheme are the Neimoidians of the Trade Federation. Then one of his Neimoidian contacts disappears, and Sidious does not need his Force-honed instincts to suspect betrayal. He orders his apprentice, Darth Maul, to hunt the traitor down. But he is too late. The secret has already passed into the hands of information...

Tanner Mirabel was a security specialist who never made a mistake--until the day a woman in his care was blown away by Argent Reivich, a vengeful young postmortal. Tanner's pursuit of Reivich takes him across light-years of space to Chasm City, the domed human settlement on the otherwise inhospitable planet of Yellowstone. But Chasm City is not what it was. The one-time high-tech utopia has become a Gothic nightmare: a nanotechnological virus has...

Who will inherit this new Earth? The last remnants of the human race left a dying Earth, desperate to find a new home among the stars. Following in the footsteps of their ancestors, they discover the greatest treasure of the past age - a world terraformed and prepared for human life. But all is not right in this new Eden. In the long years since the planet was abandoned, the work of its architects has borne disastrous fruit. The planet is not waiting...