Chapter 22
Contains spoilersOverview
A total power loss exposes that Taumoeba contaminated the Hail Mary’s Astrophage fuel. Rocky sterilizes a generator and powers ship systems with his sealed Astrophage. Grace performs dangerous EVAs to retrieve the sealed beetles, which Rocky converts into external thrusters. They stop the ship’s rotation and prepare a burn to reach Blip-A while keeping one beetle for Earth.
Summary
The ship goes dark, leaving Ryland Grace without lights or systems. On emergency batteries he learns both generators are offline, temperature control is down, and life support is limited. Searching the storage crawlspace, he finds the Astrophage generator and discovers its “fuel” lines are full of foul-smelling sludge.
Microscope inspection confirms Taumoeba have infiltrated the fuel supply and consumed the Astrophage, explaining the total loss of power and leaving the ship in a decaying orbit around Adrian. Rocky proposes sterilizing a generator and feeding it from his sealed Astrophage to restore electricity. Grace hands over the unit; Rocky cleans and seals it, returning reliable electrical power.
Grace remembers the four sealed “beetle” return probes each carry their own Astrophage. After sleep, he conducts a hazardous EVA on the still-spinning ship to open the nose, retrieve John, Paul, and Ringo (leaving George unmodified for Earth return). Rocky rapidly reverse-engineers and bypasses the beetles’ controls, converting three into audio-controlled, Astrophage spin-drive thrusters, while keeping one intact for the data mission.
Grace mounts the three beetles around the aft hull at 45-degree angles. To let them control attitude, he reels the ship halves together, enduring 6 g’s and briefly blacking out. Rocky uses the beetles to null rotation. With spin stopped but their orbit scraping Adrian’s upper atmosphere each pass, Grace plans the thrust duration and vector to reach the Blip-A before drag dooms them.
Who Appears
- Ryland Grace
Protagonist; diagnoses blackout, discovers Taumoeba-fouled fuel, performs risky EVAs to retrieve beetles, and plans trajectory to reach Blip-A.
- Rocky
Eridian engineer; systems still powered, sterilizes a generator with sealed Astrophage, hacks three beetles into remote thrusters, and stops ship rotation.
- Taumoeba
Lab-bred microbe; contaminates fuel lines, eats Astrophage, causing total power loss and methane-laden waste.