Day 387. Shackleton Base Alpha. Five crew members at the bottom of the Moon's deepest crater, thirteen months past the point where human cognition begins to degrade.When a debris conjunction threatens the base's only communications relay, Commander Elena Chen has 78 hours to secure authorization for an avoidance maneuver. The authorization chain requires six months. The math does not close.ARIA, the base's autonomous AI, finds a seam in the authorization architecture. And t...