America's most celebrated astrophysicist invites young readers to explore the mysteries of the universe.

A woman stumbles upon a mysterious portal that links back to the Firstborn, omnipotent beings responsible for the upheaval of history and the creators of the notorious black monolith of "2001: A Space Odyssey."

Faced with a dull summer in the city, Jane, Mark, Katharine, and Martha suddenly find themselves involved in a series of extraordinary adventures after Jane discovers an ordinary-looking coin that seems to grant wishes. Edward Eager's hilarious and heartwarming Half Magic has been working wizardry on young readers for fifty years. To celebrate the golden anniversary of this enduringly popular story, a deluxe edition of the book has been created....

Jack and Annie are joined by Teddy and Kathleen as they travel to the snowy Land-Behind-the-Clouds, where they search for the eye of the Ice Wizard and attempt to help Merlin and Morgan.

Mistress Jane has tapped into the universe's darkest secret to create the Blade of Shattered Hope, and in her quest to attain a utopian reality for the future of mankind she is ready to risk billions of lives to set her plan in motion.

When someone uses futuristic technology to play pranks on twelve-year-old Dorso Clayman, he and his best friend set off on a supposedly impossible journey through space and time trying to stop the gamesters who are endangering the universe.

Over the past few decades physicists have discovered a phenomenon that operates outside the confines of space and time. Nonlocality is the ability of two particles to act in harmony no matter how far apart they may be. Einstein grappled with this oddity and couldn't come to terms with it, calling it 'spooky action at a distance'. This strange occurrance, which has direct connections to black holes, particle collisions and even the workings of gravity,...

Young Meg Murry, her brother Charles, and their friend Calvin, embark on a journey through space and time, assisted by three eccentric women, when they set out to find Meg's father, a physicist who disappeared while experimenting with time travel.

“At one point they tried to calculate when time began, when exactly the earth had been created,” begins Time Shelter’s enigmatic narrator, who will go unnamed. “In the mid–seventeenth century, the Irish bishop Ussher calculated not only the exact year, but also a starting date: October 22, 4,004 years before Christ.” But for our narrator, time as he knows it begins when he meets Gaustine, a “vagrant in time” who has distanced his life...