Intense, memorable, and deeply captivating, Planetfall manages to be character-driven and idea-filled without sacrificing action and suspense. The story involves space travel, an off-Earth colony 20-some years after its establishment in the shadows of a (mostly) abandoned alien structure, the biology-linked religious beliefs that inspired the colony’s creation, a first person narrator coping with and trying to hide her anxious obsessions, and life enhanced (or maybe diminished) by advanced technology that includes 3D printers, which create everything the colony needs from homes to cups, and implanted chips, which connect every person to the web and each other--making it difficult for the main character to keep her psychological challenges off the grid and out of sight. Being inside the head of a character struggling with compulsive behaviors was unsettling and fascinating, and felt uncomfortably close to some of my own mental processes. The ending is unlike anything I’ve read, savage, visceral, cosmic and sublime.