Alastair Reynolds has produced an amazing masterpiece (an incredible debut!) blending the extrapolations of hard science with unforgettable characters set in a possible and disturbing future five centuries from now. This is a thinking person's novel, not light reading to be finished overnight. The conceptions from nanotechnology, astrophysics, genetic engineering, and computer science will stimulate you and keep you thinking long after finishing the book. It is so well written, that despite its length I was left wishing it would continue for a few hundred pages more. The vast panorama of intergalactic history and conflict, spanning billions of years, and the original ideas the author presents establish him as one of the most powerful voices of modern science fiction, in the tradition of Arthur Clarke, A.E. van Vogt, Jack Williamson, and a very few others. Although the power of this novel emerges primarily from the dizzying vistas of the future and the alien artifacts and civilizations it paints in cataclysmic brush strokes, it also features outstanding characters not easily forgotten: Khouri, the soldier assassin, and Ilia Volyova, the dynamic Triumvir on the starship Infinity, are easily two of the strongest female characters in sf literature, and the pathos of Dan Sylveste will long linger in memory as well. This novel is a first rate masterpiece of the calibre of Clarke's CHILDHOOD'S END, Williamson & Gunn's STAR BRIDGE, and A.E. van Vogt's VOYAGE OF THE SPACE BEAGLE. Highly recommended!