Center of Gravity: Star Carrier, Book Two

I’ll be honest: I went into *Center of Gravity* expecting standard-issue military SF—heroic last stands, gung-ho marines, and a side of technobabble. What I got instead was a book that *earns* its hard-SF label by making the science feel like a character in its own right. The Sh’daar, an alien collective bent on suppressing technological transcendence, aren’t just villains; they’re a cosmic check on humanity’s hubris, and Douglas forces you to grapple with whether we’re the heroes or the reckless upstarts. The space battles are visceral, but the real tension comes from the strategic chess game between human factions, where every victory feels like a gambit with unseen costs. Nick Sullivan’s narration is the audiobook’s secret weapon. He handles the military hierarchy with the ease of a drill sergeant—distinct voices for admirals, grunts, and alien diplomats—but where he *shines* is in the quieter moments. A pause before a character delivers bad news, the way his voice tightens when a pilot’s oxygen runs low—it’s these details that make the listening experience immersive. My two critiques? First, the pacing in the middle act drags slightly during the political maneuvering; Douglas’s worldbuilding is rich, but the subplots occasionally feel like detours. Second, Sullivan’s female voices, while serviceable, lack the depth of his male characters. That said, the finale’s adrenaline-fueled climax (a desperate assault on an alien megastructure) more than makes up for it. If you love SF that respects both the *science* and the *fiction*—and want a narrator who treats the material like a briefing from command—this is your drop point.