Revelation — Joseph Rhea

Far away from the troubles of Civica colony, Jacob Stone thought he had found a new home for his weary crew: a paradise almost too good to be true. Then, when a vision of something lost--but not forgotten--makes him leave it all behind, Jacob learns that there are some questions that should never be asked, and some answers that should never be revealed. In this, the next-to-last installment of the 5-book Novum saga, family bonds will be broken, friendships will be torn apart, and crew loyalties will be put to the ultimate test. In the end, a single revelation, if proven true, could foreshadow the end of the human race.

Revelation is the fourth book in the 5-book Novum series, which is also available in one massive (>600 page) volume called "Novum Chronicles"