PROLOGUE
RUTH
Halsey Run, West Virginia, April 2014
For the first twenty seconds Ruth Hollis blamed the airport.
It was the end of her shift on a Tuesday late in April, the windows of the control building going from black to gray, and she was the only person on the property. Halsey Run would close in October. The letter was pinned above the kettle and she had stopped reading it. She was seventy-four, the last night operator the place would ever have, and her job until the autumn was to finish the hydrogen survey and box up forty years of paper.
The dish outside was forty-five meters across and could not turn. It could only tip north or south along the meridian, like a man nodding, and then hold still while the Earth carried the sky past it. Tonight it had been tipped to a strip fifteen degrees north of the celestial equator where the survey had nothing in particular to look at.
The line had come onto the waterfall display at the left edge: a bright thread, narrower than anything the sky made on its own, a few hertz wide, in the protected band just above the hydrogen line where no one was allowed to transmit. It slanted a hair as it went down the screen. Its frequency was drifting, very slowly, which is what a frequency does when the thing sending it is moving.
The airport beacon at Elkins was on its own frequency and pulsed, and this was steady. She checked anyway. She pulled up the receiver log and found the system temperature where it had been all night, twenty-one kelvin, flat as a table. She opened the satellite pass list, which the survey kept because satellites were the commonest liars in her trade, and ran down it with a pencil. Nothing above the horizon in that part of the sky. And it was the wrong behavior for a satellite even if the list had been wrong. Anything in low orbit would cross her beam in a second. Anything geostationary sat far to the south of where she was pointed and would have stayed in the beam all night. This had come in at the speed of the sky.
Fifty seconds. She found she was standing.
The thread brightened, held, and began to fade, and she watched it go with her pencil lifted, the way she had once watched her son cross a road. At eighty-three seconds there was only the noise.
She sat down. She knew what eighty-three seconds was. At twenty-one centimeters her beam was about a third of a degree wide, and at this declination the turning sky took eighty-some seconds to carry a point through it. She had watched a thousand radio sources come and go in that time: quasars, old supernova shells, galaxies whose light had left before there were fish. The thread had risen and fallen in the exact shape of the beam, the bell curve every point source drew on this instrument. A transmitter switched on and off makes edges. This had made no edges. It had been there when the beam arrived and it had still been there when the beam moved on.
She wrote in the margin of the night log, in pencil: drift wrong for a satellite.
Then she saved the file and waited for the machine to tell her it had been written, and opened it again to see the thread was still in it. She copied its full address into her paper notebook, character by character. She copied the time from the screen. Unidentified narrowband transient, 06:51:12 EDT, approx. 83 s, consistent with one beam transit. Preserve raw data. Independent confirmation required.
The sun came up behind the ridge, which did not bother radio.
* * *
The sky brings everything back. That was the one promise a transit dish could make: the same strip would cross the same beam the next morning, three minutes and fifty-six seconds earlier by the clock, because the Earth turns once against the stars a little faster than it turns once against the Sun.
She was at the console an hour before it was due. She sat through the transit with her coat on and the heater ticking. She sat through twenty minutes either side of it. The waterfall came down the screen in its gray static like snow on a dead channel, and nothing stood up out of it.
She tried the next morning, and the next. On the third she let herself make coffee during the transit and took that as a sign. In the notebook she wrote No repeat, and the date, three times on three lines, and under the third she wrote No explanation offered. R.H.
Her days off were Sunday and Monday. On Monday she did not sleep after supper. She set the alarm for four, put on two sweaters and went out to the porch, where her own telescope lived under a pillowcase: a brass refractor made in 1938, three inches of glass, bought at a farm auction in Randolph County for six dollars the summer she started teaching. Her students had teased her about it for twenty-eight years. She liked having one instrument she understood all the way through.
The patch was up in the southeast by then, just south of the little arrow of Sagitta, a hand’s width west of the kite of Delphinus. She found it from the arrow. There were faint stars in the eyepiece, tenth and eleventh magnitude, any one of which might be the place she meant and none of which a three-inch lens could tell her anything about. She knew that. She adjusted the focus anyway, and the field sharpened, and the stars sat in it and did nothing.
Inside, the telephone began to ring. It would be Dale from the day crew, who started early and had found her pages taped to the monitor, and who would want to know whether she was all right. She let it ring. It stopped, and after a while it started again.
“Say it again,” she said to the sky. “Say it twice, and I’ll ruin what’s left of my life for you.”
* * *
In October the man came for the keys.
He had two cartons and a list of serial numbers and he was polite about all of it. Outside, the dish had been parked pointing straight up, its feed taken down, the receiver crated for a university in Ohio. For the first time in twenty years Ruth did not have to be anywhere before dark.
She had spent the summer in the basement. When the Green Bank three-hundred-foot fell down in the night in 1988, its paper had gone to the nearest dry building with empty shelves, and that had been Halsey Run, and there it had stayed, chart rolls and observing logs in boxes the mice had sampled. It had been a transit dish too, twice the size of hers, so its records were arranged the way hers were, by strips of sky. None of it had ever been cataloged. She had gone through it by declination, one strip a week, with a magnifying glass and a ruler, because it gave her somewhere to put her hands.
She found it in August, in a box marked 1983, and had not told anyone yet.
It was a single panel of chart paper, three inches of trace, with a sharp narrow deflection in the narrowband channel at the same position in the sky to within the old instrument’s error. The 1983 operator had penciled RFI? beside it and moved on, as she might have. She measured the width of the bump with her ruler and converted it with the chart speed. Forty seconds, give or take. The bigger dish had a beam half as wide. Forty seconds was what the sky took to cross it.
So it had been there in 1983, for at least as long as that instrument could see, and in 2014 for at least as long as hers could, and on every other morning she had looked, nothing.
“Does all this go?” the man asked. He was holding the receiver’s calibration folder.
“Yes,” she said. “All of it.”
“The summaries are already in the system.”
“The summaries won’t tell anyone what the instrument was doing that night.”
He put the folder down beside the notebook. She wrote the receiver’s serial number across its front in marker. If anyone ever found the recording, they would need to know which parts of it the machine might have made.
The raw data and the paper were going to an archive annex outside Socorro, New Mexico, where they would be scanned, or not, and shelved. She had already had the chart panel scanned at the library in Elkins at her own expense, and she watched while the man’s laptop listed the transfer inventory, and she made him open her April file from the transfer copy and then open the scan, and he did it without sighing, which she put down in his favor. She asked for the accession numbers. He said they would be issued at the other end. She said she would wait.
It took three phone calls to Socorro and most of the afternoon. He was paid until five, he told her, as if that were a generous amount of time. At a quarter to five a woman in New Mexico read her two numbers over the phone, one for each file: A14-0381 and A83-1172.
At the kitchen table that night she wrote a covering letter, one page, addressed to whoever opened such things: what each file was, which instrument, which receiver, where in the sky, and what she had ruled out. For the box itself she cut a card from index stock and printed on it in the block capitals she had used on blackboards, pressing hard enough to dent the back:
SAME POSITION. KEEP TOGETHER. R. HOLLIS.
She would post the letter and the card to Socorro in the morning.
Before bed she took a second card from the drawer and copied the two numbers onto it in the same hard capitals, one above the other. Under them she drew a line with the ruler. Under the line she printed the heading from the old detection form, the column that was supposed to hold the name of a second instrument, somewhere else, that had seen the same thing at the same time:
CONFIRMING STATION
She left the space beneath it empty and propped the card against the eyepiece case of the brass telescope, where she would see it every time she went out to the porch. She had no idea how much room to leave.