Chapter 11

Chapter 11 — "Ammonia and Pressure"

TL;DR: Through props and gestures across the hex-wall, Rocky reveals his species breathes ammonia at twenty-nine times Earth pressure — and that his home star is dying of Astrophage too.

Summary: Rocky introduces himself with a cascade of carefully placed object-models on his side of the hex-wall: a small ammonia molecule, a glowing red coal, scaled atmospheric-pressure indicators. The conversation is silent and ingenious. Grace learns the Eridians breathe a hot, dense ammonia atmosphere at roughly 29 atm — air that would crush and poison him in a heartbeat — and live on a tidally-locked world called Erid in the 40 Eridani system. Rocky leaves a star map showing Eridian space and indicating, with the same Petrova-Line glyph, that 40 Eridani is also dimming. Two civilizations, two dying suns, met in the one star system that survived. Grace and Rocky exchange names by tapping rhythmic patterns on the hex-wall.

Key scenes:

• Rocky placing model props in sequence on a small shelf against the hex-wall
• A scale diagram showing Erid's pressure as a stack of Earth atmospheres
• A second star map showing 40 Eridani dimmed by Astrophage — a parallel crisis
• The first exchange of names, tapped out as repeated rhythmic clicks

Characters present: Ryland Grace, Rocky

Locations / settings:

• The docking tube and the hex-wall — Earth-side a sterile pale chamber, Eridian-side dimly amber-orange
• A model-display shelf running along the hex-wall on Rocky's side

Visual motifs: small scale-models lined up in a row like museum exhibits, two star-system diagrams etched in metal, the hex-wall as a recurring honeycomb spine of the composition, gold-orange ambient lighting on Rocky's side bleeding through honeycomb cells

Emotional tone: awed, focused, fast-bonding, urgent

Confidence: high — the ammonia/pressure reveal and the parallel Astrophage threat to Erid are core to the book.