The third book in the New York Times bestselling Expanse series, Abaddon's Gate opens the door to the ruins of an alien gate network—and the crew of the Rocinante may hold the key to unlocking its secrets. Now a Prime Original series.  For generations, the solar system—Mars, the Moon, the Asteroid Belt—was humanity's great frontier. Until now. The alien artifact working through its program under the clouds of Venus has appeared in Uranus's orbit, where it has built a massive gate that leads to a starless dark. Jim Holden and the crew of the Rocinante are part of a vast flotilla of scientific and military ships going out to examine the artifact. But behind the scenes, a complex plot is unfolding, with the destruction of Holden at its core. As the emissaries of the human race try to find whether the gate is an opportunity or a threat, the greatest danger is the one they brought with them. Abaddon's Gate is a breakneck science fiction adventure following the critically acclaimed Caliban's War. "Interplanetary adventure the way it ought to be written." —George R. R. Martin Hugo Award Winner for Best Series The Expanse Leviathan Wakes  Caliban's War  Abaddon's Gate  Cibola Burn  Nemesis Games  Babylon's Ashes  Persepolis Rising  Tiamat's Wrath ​ Leviathan Falls  Memory's Legion The Expanse Short Fiction Drive  The Butcher of Anderson Station Gods of Risk The Churn The Vital Abyss Strange Dogs Auberon  The Sins of Our Fathers​