I'm not going to spoil anything, suffice to say that the object that is encountered in space is nothing like anything portrayed in science fiction before. The exploration narrative goes far beyond Clarke's Rama, and Watts poses some very interesting philosophical questions along the way.
The book has some minor narrative issues that annoyed me, but still a great read.
[1] https://www.amazon.com/Blindsight-Peter-Watts/dp/0765319640
Permutation City: People can run simulations of themselves or entirely migrate their consciousness into computer programs, but existence is often limited to the amount of computation that you can afford, leading to slow existences that stretch time into fractions of realtime. That premise had me hooked, but the book has fantastic thought provoking plot points throughout. Highly recommended. http://www.amazon.com/Permutation-City-Novel-Greg-Egan/dp/15...
Blindsight: Amazing first alien encounter book that should be read by everyone that is a fan of the genre. Memorable cast of characters...the Vampires are really interesting. All kinds of introductory scientific concepts throughout. Entertaining and educational. http://www.amazon.com/Blindsight-Peter-Watts/dp/0765319640/r...
This is a tangent, but Peter Watts's brilliant novel Blindsight deals with this issue (among many others). Describing how would unfortunately ruin a key plot point.
He uploaded the whole novel to his website: http://www.rifters.com/real/Blindsight.htm but in my view it's more than worth getting in paper: http://www.amazon.com/Blindsight-Peter-Watts/dp/0765319640 .
https://www.amazon.com/Blindsight-Peter-Watts/dp/0765319640