"Abaddon's Gate" http://www.amazon.com/Abaddons-Gate-Expanse-James-Corey/dp/0316129070is the third book in the marvelous science fiction Expanse series about the intersection of aliens in the terrestrial solar system. The prior two books "Leviathan Wakes" and "Caliban Rising" have been super and this book is equally great.
According to wikipedia, . "Abaddon means destruction or "place of destruction", or the realm of the dead, and is associated with Sheol."
So just from the name alone, the reader should know that this book is going to be about a place of destruction, which fits this story because the alien protomolecule has been the definition of destruction.
The aliens have constructed a giant structure in space, which the humans from Earth, the belters, and the Martians soon learn, as the result of a kid's mission into space, is a gate to somewhere else. But no one knows what on the other side.
Each is going to send their best and brightest to find out what the gate portends.
Meanwhile James Holden, who was the hero of the first two books in this series is trying to be somewhere else. But is dragged to the gate by fate. Once there, Holden and his crew end up going through the Gate to escape a posse of ships after them, and Holden journeys to a sphere inside the Gate, while the rest of the vast armada enters the Gate.
And that's when it gets interesting.
Corey, the pseudonym of Daniel Abraham and Ty Franck, keeps the alien doings to a minimum. Although Holden deals with the aliens face to face, this is really a story about how the space crews react to events on their space ships. Engineering, space marines, politics, savagery. Men work together to save the space fleet, but also men war against each other.
Its an exciting stupendous yarn.
My minor problem is that I am not sure that certain priest's actions are believable. However, I liked the character and from a certain perspective of differentiating two people of faith, the character's action were essential to the plot.
Find it and read it. Its the best two days reading I have spent in quite a while.