Amazon.com description: Product Description: Introducing a revolutionary new series that combines dynamic, multi-layered visuals with stimulating and accessible text plus easy-to-follow cross references. The result enables readers to chart their own paths of discovery through a range of high-interest nonfiction subjects. Each path is completely unique, and readers can choose a new path every time they pick up the book.

Superb photographs and vibrant, varied color graphics enliven every page. The lively text, written to stimulate young imaginations, has been checked for accuracy by experts from such institutions as the Smithsonian and the American Museum of Natural History.

More than "museum tours in books," these kid-friendly guides offer a true hands-on approach to learning.

Blast off on an incredible journey into Space. No other book offers young readers so many paths to explore the universe. Kids can start out in their own cosmic neighborhood, zoom through outer space, and end in the far reaches of the universe. Or they can follow their own interests! They can read about real-life space heroes in "Inside Story," or get creative with "Hands On" activities and prove why the Earth spins. If they're especially interested in supernovas, nature's most powerful explosions, they can head straight to "Changing Stars" and move through the book from there.

Each of these features is found on every spread:

* VISUAL SECTION OPENER stimulates curiosity.

* INSIDE STORY puts a human face on important scientific discoveries.

* HANDS ON describes fun projects and activities.

* WORD BUILDERS explores the fascinating history of words and phrases

* THAT'S AMAZING! highlights extraordinary facts and figures.

* PATHFINDER provides cross-references to other spreads.

Dimensions (inches): 9 1/2 x 13 1/4