New York Times bestselling author Greg Bear's Eon is now available for the first time in trade paperback.

The 21st century was on the brink of nuclear confrontation when the 300 kilometer-long stone flashed out of nothingness and into Earth's orbit. NASA, NATO, and the UN sent explorers to the asteroid's surface...and discovered marvels and mysteries to drive researchers mad.

For the Stone was from space--but perhaps not our space; it came from the future-but perhaps not our future; and within the hollowed asteroid was Thistledown. The remains of a vanished civilization. A human-English, Russian, and Chinese-speaking-civilization. Seven vast chambers containing forests, lakes, rivers, hanging cities...

And museums describing the Death; the catastrophic war that was about to occur; the horror and the long winter that would follow. But while scientists and politicians bickered about how to use the information to stop the Death, the Stone yielded a secret that made even Earth's survival pale into insignificance.

GREG BEAR is the author of more than thirty books of science fiction and fantasy, including Hull Zero Three, Eon, and Moving Mars. Awarded two Hugos and five Nebulas for his fiction, one of two authors to win a Nebula in every category, Bear has served on political and scientific action committees and has advised both government agencies and corporations on issues ranging from national security to private aerospace ventures to new media and video game development.