A very long and well constructed novel (exploded narration with an accelerando towards the end location or the intrigues converge). It has something for lovers of hard sf .. is the trifecta: gigantic vessels, believable alien race (! Very) restored by archaeological, genetic and cybernetic enhancements of the human race (various factions different modes .. ..) artificial intelligences, cryogenics, "machinery of civilization, spatial archeology, several planets colonized with differentiated history and searched, nanotechnologies, new religions, duplications of consciousness, various companies both on planets and in space (which inter act together) , technological collapse, civilization collapse) All these people and these technological wonders coexist and collide at the speed of light it has enormous consequences: we have a very credible space opera. We are here to cross genres ... post cyber-punk, space opera, military sf ... What is striking is the character of Successful treatment of all these issues .. and all the way thorough. This gives the impression that we are really at a turning point of the genre. It was the Alastair Reynolds criticizes create disembodied and cold characters. Personally I think they are very consistent with the world in which they live and that it could hardly be otherwise !! The author can write .. if these characters are relatively disembodied I prefer to say that this is due to the will of the author. As you think about it .. I find they help shape the atmosphere of the future so far removed from our daily lives and our horizon ... The space of the revelation is for all these reasons difficult to access .. If you persevere .. we acquire the basics of this universe meticulously restored .. we appreciate it .... It is true that one can refuse it because it is abounding long, arduous and a very special tone (black ??)