Babylon's Ashes

The War After the Catastrophe

Babylon’s Ashes is the sixth novel in The Expanse, and it has the unenviable job of following Nemesis Games — the franchise high point that split the Rocinante’s crew and detonated a system-wide catastrophe. Where its predecessor was intimate and explosive, Babylon’s Ashes is wide and consolidating: a war novel that gathers up the fallout of the previous book’s disaster and works methodically toward its resolution. It closes out the first major arc of the series — the six books that form the Expanse’s initial movement — and while it is a step down from the sheer impact of Nemesis Games, it is a solid, satisfying, and structurally necessary conclusion to that arc.

The situation it inherits is dire. The Free Navy — a radical Belter insurgency that struck a devastating blow against the inner planets at the end of the last book — has seized power in the outer solar system, and the surviving governments of Earth and Mars, along with their Belter allies, must unite to stop it before its violence consumes everyone. The crew of the Rocinante, reunited after their scattered journeys home, joins this sprawling coalition effort. The novel becomes a panorama of a system-wide war, following the conflict from many angles as the fragile alliance struggles to end an insurgency that began with legitimate grievances and curdled into atrocity.

Scope Over Intimacy

The defining structural choice of Babylon’s Ashes is its breadth. Where most Expanse novels limit themselves to a handful of viewpoint characters, this one opens up dramatically, rotating among a large cast that includes not just the Rocinante’s crew but politicians, Free Navy figures, Belter civilians, and others scattered across the solar system. This wide-angle approach gives the book a genuine sense of scope — you feel the war as a thing happening everywhere, to everyone, rather than as a story funneled through a few protagonists. It is an effective way to dramatize a system-spanning conflict, and it underscores one of the series’ enduring strengths: its insistence on treating even its enemies as comprehensible human beings, the Free Navy’s fighters rendered as people with reasons rather than as faceless villains.

The trade-off is that the sprawl dilutes the intimacy that made Nemesis Games so powerful. By spreading its attention across so many viewpoints, Babylon’s Ashes loses the tight, character-deep focus of its predecessor; no single thread carries the emotional weight that Naomi’s or Amos’s did in the previous book. This is a deliberate and defensible choice — a war this large arguably demands a wide lens — but it makes Babylon’s Ashes a cooler, more diffuse reading experience, more concerned with the mechanics of ending a conflict than with the inner lives of the people fighting it.

Consolidation, Not Escalation

It is fair to say that Babylon’s Ashes is more a consolidation than an escalation. Nemesis Games raised the stakes to an almost unbearable pitch; this book’s task is to bring them back down to a resolution, to clean up the catastrophe and restore some order to the solar system. That is necessary work, and the authors do it competently, but it means the novel lacks the forward propulsion of a book that is raising stakes rather than settling them. The middle stretches of the war — the maneuvering, the gradual tightening of the coalition’s grip — can drag, and readers accustomed to the series’ momentum may feel this volume marking time as it works toward its conclusion.

What redeems the structure is the satisfaction of the payoff. The Free Navy crisis, which has loomed over the series since the end of the previous book, is resolved in a way that feels earned rather than convenient, and the resolution carries a genuine thematic weight: the war is ended not by a lone hero but by coalition and compromise, by people choosing to work together across old enmities. This is consistent with the Expanse’s grounded, political sensibility — its conviction that the great problems are solved collectively or not at all.

Closing the First Arc

Babylon’s Ashes matters most as the capstone of the series’ first six-book arc. Taken together, the opening sextet tells a complete story — the discovery of the protomolecule, the opening of the alien gates, and the political convulsions that follow — and this book brings that movement to a coherent close before the series leaps forward in time for its final trilogy. Read in that light, its consolidating function makes sense: it is tying off threads, resolving conflicts, and clearing the board for the next phase.

For readers continuing the Expanse, Babylon’s Ashes is a necessary and satisfying, if not spectacular, installment. It cannot match the impact of Nemesis Games, and its wide-angle sprawl sacrifices the intimacy that is the series at its best. But it delivers a solid, earned resolution to a major arc, keeps faith with the series’ humane and political instincts, and sets up the dramatic time jump to come. It is the Expanse operating at a high level of craftsmanship, even if not at its peak of inspiration.

Final Verdict

Our rating: 4.1/5 — A wide-angle war novel that resolves the catastrophe of Nemesis Games and closes the Expanse’s first six-book arc with satisfying competence. Broader and cooler than its predecessor, occasionally slow, but earned and coherent. Solid, necessary space opera.

Read it after Nemesis Games, then continue with Persepolis Rising.