Book was very easy to read, chapters were very short and very well structured. Book was keeping my interest all the time. If somebody described me what it is about I wouldn't believe that It might be that interesting.
Author describes first contact of humans with aliens. Space crew was assigned on an exploration mission of an unknown object closing to a centre of our planetary system - the sun. Its physics is surprising unexpected but logical. Book describes consequences of events and actions of the crew their observation, decision making process and thinking. Author indicates future structure of human organization in our star system along with a few bits of individual insights. Book has continuation and I'll definitely read it at some point.