Greg Bear

Tor Science Fiction



Mass Market Paperbound

512 Pages



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In this novel, Bear offers what "may be the best constructed hard SF epic yet" (The Washington Post).

The 21st century was on the brink of nuclear confrontation when a 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. They discovered enough marvels and mysteries to drive all researchers mad.

The strange Stone was from space—but perhaps not our space; it came from the future—but perhaps not our future. Within the hollowed asteroid was Thistledown, the telling remains of a vanished civilization. Indeed, a human civilization—English, Russian, and Chinese-speaking—with seven vast chambers containing forests, lakes, rivers, and hanging cities.

Thistledown also contained 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 approaching Death, the Stone yielded a secret that made even Earth's survival pale into insignificance.


Praise for Eon

"Sharing aspects of Clarke's Rendevouz with Rama, [this novel's] uniqueness arises from Bear's bold imagination. Bear is a writer of passionate vision. Eon is his grandest work yet."—Locus

Reviews from Goodreads



Read an Excerpt

Chapter One: April 2005
On the first leg of the trip, in the passenger cabin of the long-bed shuttle, Patricia Vasquez had watched the Earth's cloud-smeared limb on a video monitor. Before her own transfer, cameras mounted in the shuttle bay had shown her the long waldos maneuvering the huge cargo out of the bay into the waiting arms of the OTV--orbital transfer vehicle--as if two spiders were trading a cocoon-wrapped fly. The operation had taken an hour, and with its slow fascination had distracted her from thoughts about her present circumstances.
When her own turn came
Read the full excerpt


  • Greg Bear

  • Greg Bear was born in San Diego in 1951. His father was in the navy, and by the time Greg was twelve years old, he had traveled with his parents to Japan, the Philippines, and various parts of the United States. He is the author of over twenty books, which have been translated into a dozen languages. He has won four Nebulas and two Hugos for his SF writing and was awarded the 2006 Robert A. Heinlein Award for outstanding published work in hard science fiction or technical writings inspiring the human exploration of space.
  • Greg Bear
    Greg Bear