In the 30th century, few humans remain on Earth. Most have downloaded themselves into robot bodies or solar-system-spanning virtual realities, escaping death—or so they believe, until the collision of nearby neutron stars threatens life in every form.Diaspora, written by Hugo Award and John W. Campbell Memorial Award winner Greg Egan, transcends millennia and universes in the tradition of Poul Anderson’s Tau Zero, Bruce Sterling’s Schismatrix Plus, Camille Flammarion’s Omega, and Olaf Stapledon’s Last and First Men. Diaspora is packed with mind-bending ideas extrapolated from cutting-edge cosmology, physics, and consciousness theory to create an astonishing hard-SF novel inhabited by very strange yet always believable characters. Diaspora is why people read SF.—Cynthia Ward