Opening the book…
Chapter 1 — The Erika in July
The secondary stack offset sat at 0.024 percent in the departure warm-up logs, and Idris read it the way he read any number that had earned the right to be boring. Luo Jia had filed it four years back — persistent baseline, within tolerance — and checked it every departure since. The 2143 refit stack carried its own signature, not the one it had replaced. Close enough to predict. Different enough to track. A different valve in the same line, behaving like itself.
The figure held. The warm-up sequence ran on under it. The Erika Magnusdóttir would clear the Svalbard dock for Junction 22-C at fourteen hundred ship-time, and at half past eight the ship was working through its departure checklist at the unhurried pace of something that had done this thirty-seven times and expected to do it again.
Idris closed the terminal and went to find breakfast.
The cohort folder lived in the corner of the mess interface where it always lived. He pulled it up one-handed while the tea steeped — too long, as always; he had been brewing it wrong since Svalbard and saw no reason to start getting it right at thirty-three. His grandmother would have had something to say. She had made it in a chipped enamel pot in Surulere and let it steep until it was nearly black, and the doing of it, not the drinking, was what he had carried north.
Reidar Halvorsen’s condolence thread topped the folder, last post fourteen months gone. Wei Lin still moderated it from an Earth-side affiliate. Five years old now — busy for the first eighteen months, then slowing, then quiet, the way a thread goes quiet once collective grief has done the part of the work that can be done in company and the rest moves into the private shapes grief takes. Saga had never posted to it. She would be twelve.
Idris had stopped reading that absence as a question some years ago. He scrolled on. A Cohort 8 navigator had put up something about harmonic-array calibration in unmapped junctions; three replies, resolved, the kind of small competent exchange that made the folder worth keeping open. He marked it read and let the folder fall shut.
Petra came in and went straight to the counter without a glance at him, which meant nothing — it meant Tuesday. She poured her coffee and took the seat two down the long table, the gap that had settled between them across three years of mornings, neither friendship nor distance but the worked-out spacing of two people who knew which mornings wanted talking and which did not.
“Stack offset’s holding,” he said.
Petra looked into the coffee a half-beat longer than the coffee required. “Luo Jia filed it at departure minus six.”
“I saw.”
Petra did not ask whether he had concerns. He would have said. She drank, and across the mess someone clattered a tray into the return slot, and the morning went on being a morning.
The corridor to the navigation deck ran past Reidar’s old quarters. Jón Jónsson had the cabin now, four years in, and had never put anything on the bulkhead outside the door — no plate, no photo, nothing. The one that used to hang there, Saga at seven holding a model ship her father had built, had come down when Vesna packed the effects for the Bergen house. The bare panel was cleaner than most crew exteriors. Idris passed it without slowing, the way you pass a thing you have decided not to make a habit of looking at.
Halland had the 22-C junction review open across three displays when he came onto the deck, and did not look up, which was also Tuesday. Sixty-one, twenty years First Navigator on this ship, she carried the Erika’s operational memory the way other people carried a spine. She had taught him to read a junction before ISNI taught him how to file one.
“The civilian boards at ten,” she said.
“Liang Kim. ISA academic partnership. Geophysicist.”
“First traversal.”
“Yes.”
Halland killed one display and opened another parameter set. “The 22-C-III preliminary flagged morphological anomalies on the northern continent. He requested the raw probe data six weeks back. He’s read it.”
A scientist who read the probe data before he set foot on the docking collar was arriving better prepared than most academic postings managed. “What’s his read on it?”
“He filed a probability range with ISA. I haven’t seen it.”
“Do we need it?”
“No.” Flat — the tone that meant not relevant to the mission, which is a different thing from not relevant. She moved to the next display. “He boards at ten. You meet him at the collar.”
“Understood.”
Mads Tolfsen came onto the deck ten minutes later. Second Navigator, thirty-nine, two years aboard after a posting gap that neither he nor Halland had ever explained and Idris had never asked into. He nodded to Halland, nodded to Idris, and went to the secondary console to start the parameter cross-check the Second always ran six hours out. He worked without comment, the precision in him worn smooth by twenty years of doing exactly this. Whatever weight Mads carried, it never showed in the work; it showed, sometimes, in the things he declined to say.
Outside the deck viewport, Svalbard turned slowly below — the dock gantries, the grey shoulder of the island, the low summer light that this far north never quite committed to being daylight. Idris took the drift projections and watched the numbers refuse to do anything interesting.
Liang Kim arrived at ten with a standard ISA kit and a research case that plainly weighed more than the kit. Compact, exact in his movements, thirty-one, Houston affiliate, four published papers on thermodynamic depletion signatures in post-volcanic cooling — Idris had read the abstracts the night before.
“Dr Kim. Welcome to the Erika Magnusdóttir. First Drift Officer Fasola.”
Liang shifted the case to his left hand and put out his right; the grip was brief, functional, already half turned towards the corridor beyond. “Thank you. Liang’s fine. The harmonic-array bay is on this deck?”
“Deck Three, forward. After orientation I can—”
“I’d rather go there first.” No apology in it, no softening. A man stating a sequence. “I need to configure for the 22-C-III thermal profile before we depart.”
Not if possible. Not would you mind. He had an order of operations in his head and was simply reading it out. “We leave at fourteen hundred. That gives you three and a half hours.”
“Sufficient.”
Idris took him down. Liang asked nothing about the ship — moved through the corridor like a man who had studied the deck plans and resented the time it would take to confirm them. In the array bay, Luo Jia was at the primary calibration console and looked up as they came in.
“Luo Jia, Dr Liang Kim — ISA posting for the 22-C survey.”
Luo Jia stood, nodded. “Drift Engineer. The array’s mine.”
Liang set down the case and offered his hand. “I read your calibration methodology in the briefing materials. You keep a secondary log.”
Luo Jia took the hand, let it go, her face giving up nothing. “The post-2135 instrument standard wants one.”
“Your frequency-precision baseline for unmapped junctions runs tighter than ISNA’s.”
“It does.”
Liang had the slate out already, a file up, the screen turned towards her. “The 22-C-III probe data shows a 0.4 percent thermal variance across the northern survey zones. At ISNA baseline that reads as instrument drift. At your documented precision it reads as signal.”
For a moment Luo Jia only looked at the slate. Then she turned to the console and changed a parameter without a word of explanation, and turned back. “It’ll read correctly.”
Liang nodded once — no thank-you — and stowed the slate. “Where do I set up the surface-scanner array?”
“Station four.” She tipped her head towards the far workstation. “You’ll have the probe feed and the live survey link once we’re in-system.”
Liang carried his case across and did not look back. Idris caught Luo Jia’s eye for a half-second; she gave him the smallest thing back, the one that between the two of them meant he knows his subject — and went to her console. He left them to it. Behind him the array breathed its warm-up, the same nine-minute sequence it ran before every crossing, and the bay smelled of ozone and the cold metal of console housings that never quite came up to room temperature this near the hull.
The departure at fourteen hundred went the way good departures go, which is to say it was nothing to watch. Halland authorised the Svalbard clearance; Mads confirmed the parameters; the Erika came off the dock and put its bow on the twelve-hour run to the 22-C entry threshold. From the primary console Idris held the drift projections, and the numbers held him back, and the ship settled into transit.
That evening the mess filled for the first meal underway. Idris took his usual seat, Petra two down, and Dáithí Mac Diarmada dropped into the place across from him with a data slate already up. Thirty-one, Cohort 12 like Idris, precise to the degree that had made him the best calculator ISNI turned out in a decade — and aware of it the way a level is aware it is level, without vanity, as a property of the instrument.
“The junction approach is clean,” Dáithí said, not looking up.
“It is.”
“The 2144 probe data flagged the northern-continent anomalies as Category B. The civilian’s filed an updated probability.” He turned the slate around. “Ninety-seven point three. Non-geological origin.”
Idris set his fork down and read it. Then read it again. The ISCA notification threshold for artificial structures was ninety-eight point five, single-methodology. If Liang’s ninety-seven point three was single-methodology — and the filing format said it was — the northern-continent structures sat one and two-tenths under the line that would have pulled in a formal ISCA contact.
“He filed this with ISA before he boarded,” Dáithí said.
“Methodology?”
“Morphological feature analysis with thermal-variance mapping. Standard for post-volcanic work.”
Idris handed the slate back. “It’s below threshold.”
“It is.”
“Then we run the geological survey as planned.”
Dáithí set the slate beside his plate and let the subject lie there, which from him was not the same as having nothing to add. Two seats down, Petra looked up from her coffee, found Idris for the length of a second, and went back to it, her face having done exactly nothing — which, with Petra, was a kind of sentence. The mess clattered on around the three of them, fish and the seven-day menu and somebody’s chair scraping, and the number sat at the centre of the table where only Idris seemed to be looking at it.
At two in the morning ship-time he woke in his quarters and lay still for half a minute, waiting for the reason. No alarm. No proximity alert. The hull’s ambient note held at the ordinary frequency of transit. Eight hours into the approach, then; four to boundary contact. He got up and went to the deck.
Halland was there. Halland was always there on a junction approach. She stood at the observation viewport with a slate she was not reading, looking instead at the empty dark where the boundary would come up in the last half hour — looking at the place a thing would be as though she could already see the shape of it.
“Couldn’t sleep,” she said, not turning.
“No.” He went to the secondary console and pulled the drift display. Nothing had moved. “Approach is holding.”
“It is.”
Halland turned from the viewport then, and looked at him a beat past the length of an ordinary look. “You read the civilian’s assessment.”
“I did.”
“Ninety-seven point three.”
“Yes.”
“One and two-tenths under the line.”
“Yes.”
Halland put the slate down on the console. “Twenty years on this ship, I’ve seen three surveys come in near the ISCA threshold on the preliminary. Two went above it after the in-system work. One went below.”
“And the one that went below?”
“We filed it as a geological anomaly and moved on.”
Idris waited. She was not finished.
“The question you’re not asking,” Halland said, “is what happens if the in-system survey moves ninety-seven point three up to ninety-eight five or past it.”
“We notify ISCA.”
“We do.” She picked the slate back up and did not open it. “And then we hold position six months while ISCA sends a contact-assessment team, and the next mission slides, and the whole ISNA schedule downstream of us slides with it. Crew rotation. Resupply. A cost somebody has to write a justification for.”
Idris had the chain already — the cascade of it ran out ahead of him the way a pressure drop runs down a line.
“The civilian filed before he boarded,” Idris said. “He knows the threshold.”
“He does.”
“And he gave us a number one and two-tenths under it.”
“He did.”
Halland went back to the viewport, and that was the end of it. Idris stayed at the console another ten minutes while the projections held, and then went back to his quarters and lay in the dark, and the pre-boarding figure would not settle.
Ninety-seven point three. He had read it in the crew brief two days out and taken it for one more parameter; every number in a mission file earns its place. It did not stay one more parameter. A man who carried the ISCA threshold in his head had filed a probability that came in a point and two-tenths beneath it — close enough to be worth the filing, far enough to cost the Erika nothing. He turned it the way he turned a drift projection that balanced clean on the display and still read wrong somewhere in the body of it: find the junction where the pressure dropped, and the rest of the system tells you where to look. He could not find the junction. The number was clean. The filing was clean. Halland had stood at the viewport and named the question he was not asking and had not said what it was.
Past the bulkhead the array cycled its warm-up at the transit frequency, nine minutes end to end, the same run it made before every crossing he had ever flown. He lay listening to it, the body he had brought up from Lagos still not reconciled to a latitude where the dark could last a season, the cold of the cabin wall finding his shoulder through the bunk. He listened until the thing he could not name stopped sharpening at its edges. Then he slept.
At six the boundary alert sounded and he came back to the deck. The Seam boundary was up now — a faint wrongness in the viewport, heat-shimmer pitched at an angle that did not belong. The Erika held standard velocity into it. Halland at the primary, Mads at the secondary, Idris at the drift-monitoring station.
The ship crossed the threshold.
Contact was immediate and brief: the sense of being in two places at once, neither of them the place left nor the place coming, four seconds of it, and then it stopped.
In the array bay Liang Kim took his first traversal with his hands flat and still because the briefing had said keep them still, and his eyes open because the briefing had said some people fared worse shut and some better and there was no telling in advance which you were. The four seconds came as a compression of attention — not the absence of sensation but the whole of it arriving at once, with no frame he owned to hold it in. He did not panic. He waited. The four seconds passed; the bay’s instruments came back; his hands had not moved and his pulse, when he checked it, sat high but inside the post-traversal range.
Liang looked up at the viewport. Different stars. The 22-C primary at bearing 284 mark 6. The third planet at 1.4 AU, its northern hemisphere coming up through the scan array. Forty years of signal physics and traversal theory and programme-building, thirty-one years of ISNA operations, three thousand eight hundred crossings since 2123 — and the whole of it produced this. Four seconds of contact. A different star in the glass. He ran the pre-survey thermal warm-up and waited for the navigation deck to clear his variance scan.
The sensors came back. Idris checked the drift.
Zero point eight AU off projected arrival. Inside range for an unmapped junction. He gave it to Halland.
“Confirmed,” she said. “In-system. 22-C primary, bearing 284 mark 6. Third planet, 1.4 AU, northern hemisphere visible.”
Idris brought up the surface scan. The northern-continent anomalies came in as Category B — unusual, non-standard, flagged for closer look — and he pushed the data through to the array bay. Three minutes on, Liang’s voice came over the internal line.
“Fasola. I want a thermal-variance scan on the flagged zones before we start the geological protocol.”
Idris looked to Halland. A nod.
“Approved. How long?”
“Forty minutes.”
“Go.”
The scan ran forty-one. When it finished, Liang did not call up — he came in person, carrying the slate, his face unchanged, precise and operational still, but holding the thing the way a man holds something that is about to require a decision from somebody.
“First Navigator. I have the thermal-variance results.”
Halland turned from the console. “Go ahead.”
Liang set the slate where the three of them could see it. A thermal-variance map of the northern continent: the flagged structures in red, a blue halo ringing each one.
“The structures carry thermodynamic depletion signatures,” Liang said. “The kind you’d see from a large-scale thermal event — except the distribution’s too regular for volcanism. The depletion’s localised to the immediate vicinity of each structure. It reads as though heat is being drawn out of the local spacetime, not put into it.”
Idris looked at the halos. Identical in size. Identical in intensity. A run of structures laid out across the continent with the regularity of something built, each one ringed by the same blue.
“And the probability?” Halland said.
Liang met her eyes. “The morphology read stays where I filed it. Ninety-seven point three non-geological, single-methodology. One and two-tenths under the ISCA threshold.” He touched the slate. “The thermal data I’m filing as a separate datum. Category B — thermodynamic anomaly attributed to tectonic and thermal history. It’s consistent with post-volcanic cooling in the absence of active tectonics. It supports a geological origin.”
Idris heard the move once as it was made and once as it landed.
The depletion was the strangest thing on the slate, and Liang had filed it as the most ordinary.
Halland gave it nothing. She studied the slate, then handed it back. “You’re certain.”
“The signature’s consistent with cooling,” Liang said. “The morphology stays unusual, but it’s not inconsistent with long-term erosion in a low-atmosphere, low-water environment. The two read together support the geological classification.”
“File the thermal data as a Category B supporting datum,” Halland said. “The morphology assessment stands at ninety-seven three. We run the geological classification as planned.”
“Understood.” Liang took the slate and went.
Mads, at the secondary, had not looked up from his cross-check. Idris waited for Halland to say something into the quiet she had left. She did not. She turned back to the primary and began the in-system sequence, and the blue halos stayed up on the dead slate in Idris’s memory, every one of them the same.
Idris found Petra in the mess that morning, already there, reading something on a slate.
“The civilian filed the thermal data,” she said before he’d sat.
“You saw it.”
“Halland sent it to the survey team. Category B.”
“Cooling.”
“Yes.”
Idris poured the tea. The water came up hot and the cup held its heat — at least that part of the ritual had become reliable after enough mornings. “He kept the morphology at ninety-seven three. The thermal scan he booked under cooling. Category B.”
“He did.”
Idris set the cup down. “It’s the strangest reading on the planet, and he filed it as the most ordinary one.”
Petra closed the slate. She looked at him a couple of seconds — and Petra read institutions for a living, read the form of a thing before its content, and if there was a shape here to be read she had it already. “He filed the convenient reading,” she said.
And nothing after that. He waited her out and got nothing, which was itself the answer: there was something to understand here, and she had understood it, and she was choosing the way she always chose. He left it where she’d left it, and drank the tea while it was still hot.
The survey began. The Erika Magnusdóttir settled into the first day of a three-month geological classification at Junction 22-C, third planet, northern continent, and the morphological anomalies went into the log as Category A — unusual, non-standard, attributed to erosion and planetary cooling. The depletion signatures sat under them as supporting evidence for the classification, the readings doing the work the ISNA category needed of them, proving the thing they most contradicted.
Idris went back to the deck. The projections held.
Ninety-seven point three.
Category B. Cooling.
The question sat at the edge of his thinking the rest of the day, and he did not put it into words, because he was not yet sure of the words. He had been watching Halland seven years and knew her tells. She had shown nothing when Liang filed the depletion as cooling. She had studied the slate, confirmed the assessment, ordered the survey on.
Halland had not asked the obvious thing. If heat is being drawn out of the local spacetime — if the distribution is too regular for volcanism, as the man’s own scan said — then how does that read as cooling? What kind of cooling leaves a signature too ordered to be natural? She had not asked it. Liang had not been asked it. Liang had filed the datum; Halland had taken it.
Idris had not asked it either. Two feet away, and he had let it pass.
In his quarters that evening, with the ship in a stable orbit over the northern continent and the survey set to open at six, he understood the shape of his own silence — and that understanding was what had pulled him out of sleep the night before, when Halland stood at the viewport and named the question without naming it. Seven years she had been training him for this: not how to ask it, but how to carry it once it could not be asked.
Idris had not been sure, until today, what the question was.
Now he was. The survey would open at six, and the question would be in the work from the first hour, sitting under a continent of blue halos that everyone aboard had agreed to call something else.