Babylon's Ashes (The Expanse Book 6)

Babylon's Ashes is a science fiction novel by James S. A. Corey, the pen name of Daniel Abraham and Ty Franck, and the sixth book in their The Expanse series. The title of the novel was announced in early July 2015, and the cover and brief synopsis were revealed on September 14, 2015. It won the 2017 Dragon Award for Best Science Fiction Novel. This is the last book in the series to be set in the period that began with Leviathan Wakes, as the remaining sequels take place decades later.