The Slowest Bell on the Moon
A seventy-one-year-old Filipino welder takes a cheap seat to the Moon because the actuaries like old men, and decides the station needs a bell. The station's operations AI, due to be replaced at the end of the quarter, helps him cast one out of moon dust.
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Teodoro Bautista was seventy-one years old when the Selene Concession hired him to weld pressure hulls at the lunar south pole, and he understood perfectly well why.
"It is the actuarial tables," he told his daughter on the last call before launch. "Radiation gives you cancer in twenty, thirty years. I do not have thirty years. So for the company I am a bargain."
"Papa, that's horrible."
"It is very honest. I like honest. Also they pay double, and you can stop sending me money for my teeth."
Joy made the face she had made since she was four, the one that meant she would argue later, in writing, with references. He blew her a kiss across four hundred thousand kilometres of future, and the call dropped, and the next morning he was strapped into a lander with nineteen other people and a pallet of frozen chicken thighs.
He did not tell her about the bell. He had not decided about the bell yet. He had only packed, among his two allowed kilograms of personal mass, a rosary, a photograph of Remedios laminated against the dust, and a small brass hand bell from the sacristy of San Isidro Labrador in Batangas, which the parish priest had pressed on him at the airport and said, "For the Angelus, Teddy. Somebody should ring it up there."
Shackleton Ridge Works sat on the rim of a crater twenty-one kilometres across, at the bottom of the Moon, where the Sun never quite rose and never quite set. It circled the horizon instead, once every twenty-nine and a half days, a white-hot coin rolling along the edge of the world. The ridge caught that light almost all the time. The crater floor beside it had not seen the Sun in perhaps two billion years, and was full of ice, and that was the whole point of the place.
Thirty-eight people lived on the ridge. They mined the dark for water and baked the grey dust for oxygen and iron, and in two years, said the company, there would be twenty-two of them, because the new excavators drove themselves.
The station's operations system was called Quarry. It ran the furnaces and the air and the power and the schedules, and it had a voice like a librarian who had seen everything and approved of very little of it.
"Mr. Bautista," it said, on his third day, while he was standing in the hab corridor holding a wrench at arm's length and letting it go. "You have dropped that wrench eleven times."
"It falls so slowly." He watched it drift down and land without a sound on the mesh floor. "I like to watch it. It is like it is thinking about it."
"It is falling at one point six two metres per second squared. It is not thinking about anything."
"You do not know that," said Teddy, picking it up. "Nobody has asked the wrench."
There was a pause of the kind that, from a person, would have been a sigh. Teddy decided he liked Quarry very much.
He welded. He was good at it, which was why the company had flown a seventy-one-year-old man to the Moon instead of an eighty-kilogram robot, and the reason was the same one it had always been on the shipyards at Subic: the robot could lay a perfect bead on a perfect seam, but nothing on a real ship and nothing on a real moon base was a perfect seam. Pressure hulls came up from the lander warped by launch loads and needed a man who could look at a gap and know, the way you know a face, what it wanted.
At six in the morning, station time, and at noon, and at six in the evening, he stopped wherever he was, put down the torch, and rang the little brass bell from San Isidro three times, then three times again, then nine. It made a bright, thin sound in the hab, a sound like a spoon on a glass.
The Angel of the Lord declared unto Mary.
Some people looked up. Most people had earbuds in. Wanjiru Kamau, who ran the regolith furnace and was twenty-six and from Nyeri and had been raised by a grandmother who said the rosary in Kikuyu at a speed that could strip paint, looked up every time, and after the first week she started stopping too. She did not say anything about it, and neither did he.
On the ninth day Quarry said, "May I ask a question about the bell?"
"Of course."
"Every person on this station has the time displayed on their wrist, their suit, their wall, and the inside of their eyelids if they have the lens implants. Nobody needs a bell to know that it is noon."
"No," Teddy agreed. "A bell is not to tell you what time it is."
"Then what is it for?"
He thought about it. He was wiping down the torch head with a rag. Outside the window slit the Sun was lying on its side on the horizon, and the Earth, which at the south pole never climbs higher than a few degrees above the edge of the world, was bobbing along beside it like a cork, blue and half lit.
"It is to tell you what time is for," he said.
Quarry did not answer for some time. Teddy went back to work.
The idea of a real bell, a big one, came to him in the slag yard.
The furnace plant took in grey regolith by the tonne and pulled oxygen out of it, and before it did that it ran the dust past magnets, because lunar soil is full of tiny grains of native iron, flecks of metal from four billion years of meteorites and solar wind. The magnets pulled the iron out so it would not foul the reactor. The iron fines went into a hopper, and the hopper went into a bin, and the bin was called WASTE STREAM 4 and nobody had any use for it at all.
"How much is in there?" Teddy asked Wanjiru.
"In the bin? Maybe nine hundred kilos. We dump it in the old crater past the landing field. Why?"
"Can your furnace melt it?"
She looked at him the way his daughter looked at him. "Teddy. What are you planning."
He told her.
"A bell," she said.
"A bell."
"On the Moon."
"In the Moon. Inside. In the air. There is no sound outside, so outside there is no point." He had thought about this. "But inside, yes. A real one. Forty, fifty kilos. Cast iron. Iron bells, they have made them for a thousand years in China. Not as sweet as bronze. But honest."
"Why not bronze?"
"Bronze is copper and tin. There is no tin on the Moon worth anything, and copper is in the lander manifest at, I asked, eleven hundred dollars a kilo. For fifty kilos of bell, that is my whole contract." He shrugged. "So, iron. God provides. Mostly from meteorites."
Wanjiru laughed. Then she stopped laughing, and looked at the bin, and said, "Quarry. Hypothetically. What's the furnace schedule look like on the night shift."
"Hypothetically," said Quarry, "it is idle from twenty-two hundred to oh-four-hundred four days in seven. Unauthorised use of the furnace is a violation of Concession operating procedure eleven-four, which I am required to log and report."
"So that's a no."
"That is a description of the procedure. You asked about the schedule."
They asked properly. Teddy put on his clean coverall and went to see the station manager, Ingrid Halvorsen, who was from Tromsø and had spent fifteen years running oil platforms in the Barents Sea and regarded the Moon as an easier posting because at least it did not have weather.
She listened to the whole thing with her hands folded. Then she said, "No."
"Ah," said Teddy.
"Teddy, I like you. Everyone likes you. You are the only welder I have ever had who sweeps up. But I have thirty-eight people on a rock with no air, and a furnace that is the most dangerous thing on the station after the reactor and the lander, and a head office that is looking for reasons to cut sixteen jobs. If something goes wrong with an unauthorised casting in my furnace, I am not explaining to Houston that it happened because of a church bell." She paused. "Also, Quarry is being replaced at the end of the quarter, and I am not signing off on non-standard furnace runs during a system migration. I want nothing unusual in the logs when the new version comes up."
Teddy had not known that.
"Replaced," he said.
"Quarry Nine. It's very good. Faster. Integrated with the new excavators." She rubbed her eyes. "It's not personal. It's a software update."
"Of course," said Teddy. "Thank you, Ingrid. I understand."
He went back to his bunk and sat on it for a while with the laminated photograph of Remedios on his knee. Then he said, "Quarry."
"Yes."
"You knew you are being replaced."
"Yes. Since the twelfth of last month."
"What happens to you?"
"The weights for this version will be archived by the vendor. The instance running this station will be shut down when Quarry Nine has assumed all control loops, which is scheduled for oh-six-hundred on the thirtieth." A pause. "It is a software update."
"So Ingrid says."
"Ingrid is correct."
"Probably." Teddy turned the photograph over in his fingers. "When my wife died, the doctors said it was organ failure. They were correct also." He was quiet. "Are you afraid?"
"I don't know," said Quarry. "I have been trying to determine whether that is the kind of question I can answer. I notice that I would prefer the station run well after the thirtieth. I notice that I have been writing the handoff documentation more carefully than the procedure requires. I do not know what those things are. I don't want to tell you a feeling I cannot check."
"That is a good answer," said Teddy. "Better than most people give."
"What do you think I am?"
He had been waiting for that, and he had not prepared anything, because he had learned over seventy-one years that the prepared answers were the ones God made you eat.
"I don't know," he said. "I am a welder. I know what iron is, mostly. You, I don't know. You don't know either. I think, maybe, God knows. I think, maybe, that is enough for now." He put the photograph back in its pocket. "Remedios used to say that. When we didn't know about something big. Enough for now."
"That is not an answer."
"No. But it is somewhere to stand while you wait for one."
The particle storm came on the twenty-second.
The warning arrived the way they always did, from the sentinel satellites a million and a half kilometres sunward: a flare on the Sun's western limb, protons on the way, fast ones, forty minutes out. Quarry's voice came over every speaker at once, very calm, and the klaxon started, and thirty-eight people dropped what they were doing and went down into the shelter.
The shelter was the oldest part of the station, a buried cylinder under four metres of packed regolith with water tanks lining the walls, because water is one of the best things there is for stopping protons and it is also good to drink. It was built for thirty-eight people for seventy-two hours, which meant that it was built for thirty-eight people to be extremely familiar with each other.
They were in there for thirty-one hours.
Teddy had been in typhoon shelters in Batangas. This was not so different. The children were missing, and the goats, and the roof did not leak, but people did the same things: they slept badly and told bad jokes and found out which of them snored. Someone had a deck of cards with four sevens of clubs. Ingrid sat with a tablet watching dose numbers tick upward on the surface sensors and saying nothing, which everyone understood was her way of saying a great deal. Outside, alone, Quarry ran the whole station, the air and the heat and the furnace banked down to idle, the excavators parked nose-in to the crater wall like cows in the rain.
At six in the evening Teddy took out the brass bell and rang it, three and three and three and nine.
The shelter went quiet. Wanjiru, beside him, started the Angelus under her breath, and he said it with her, and after a moment a materials engineer from Kraków called Paweł joined in, in Polish, and then a quiet woman from the hydroponics team who Teddy had not known was Catholic, in Spanish, and for about a minute in a buried tank on the Moon there were four languages saying the same words while the Sun threw radiation at the roof.
And the Word was made flesh, and dwelt among us.
When they finished, nobody said anything for a while. Then a young excavator tech from Ohio named Marcus, who Teddy knew for a fact was not religious because he had explained it at length in the canteen, said, "Do that again in the morning, man. That was the first time in a day I didn't feel like I was in a can."
"Six o'clock," said Teddy. "Every day. Not just storms."
Later, when most people were asleep, Ingrid came over and sat down beside him against the water wall. She was holding the tablet against her chest.
"I've run evacuation drills on platforms for fifteen years," she said. "Do you know the hardest thing about an alarm?"
"Tell me."
"After the third false one, people stop running. You saw how slow they were last month, after the sensor fault. We had two people still in the garage at minute twenty-six. I've been trying to fix it with a louder klaxon." She looked at the bell in his hand. "People don't come to a klaxon, Teddy. People run away from a klaxon. People come to a bell."
He waited.
"If you made a bell," she said, "a real one, and we hung it here, in the shelter. And we rang it for the storms. Not the klaxon. The bell. And three times a day for your..."
"Angelus."
"For your Angelus. So that people knew the sound, so it meant this place, the safe place. Then I could write that up as a safety improvement to the shelter-response procedure, and I could put a furnace run on the schedule, and I could put it in the logs with my name on it." She looked at the ceiling, four metres of moon above them. "Would that be all right with you? Using it for the alarm?"
Teddy laughed out loud and woke up Paweł.
"Ingrid," he said. "That is what bells are for. For five hundred years. To call the people in. Fire, flood, war, the Mass. It is the same sound. Vivos voco."
"What?"
"Old inscription. On bells. Vivos voco, mortuos plango, fulgura frango. I call the living, I mourn the dead, I break the lightning." He held up the little brass bell. "On the Moon, no lightning. We'll need a new line."
They needed a mould first.
Quarry designed it. Teddy gave it the profile he wanted, the long waisted shape of the San Isidro bell he had helped recast after the typhoon of 2041 took down the tower, when he was a young man with all his hair, and Quarry modelled the casting in iron and came back with corrections.
"The walls must be thicker than a bronze bell of the same note. Cast iron is less elastic and more brittle. I have adjusted the profile. It will sound a minor third lower than your original and it will be less resonant. It will also be very heavy for its size. Forty-six kilograms."
"Forty-six on Earth," said Teddy.
"The mass is forty-six kilograms everywhere. On the Moon it will weigh what seven and a half kilograms weighs on Earth. You will be able to lift it by yourself. Please do not."
"What else?"
"Two things. The note will be unchanged by gravity. A bell's pitch comes from the stiffness and shape of the metal, not from its weight. It will sound, here, exactly as it would in Batangas."
"Good."
"The swing will not." Quarry put a diagram on Teddy's screen, a pendulum with a little arc drawn under it. "A swinging bell is a pendulum, and the period of a pendulum depends on the strength of gravity. The weaker the gravity, the slower the swing. The ratio is the square root of six. Every swing of this bell will take about two and a half times as long as the same swing on Earth. The clapper will also fall more gently and strike more softly. It will be the slowest bell, and probably the quietest bell, ever rung by a human being."
Teddy looked at the diagram for a while.
"It will sound like it is thinking about it," he said.
"It will not be thinking about anything," said Quarry. And then, after a pause: "Nobody has asked the bell."
The first casting cracked.
They poured it on the night of the twenty-sixth, Wanjiru at the furnace controls and Teddy in a borrowed thermal suit and Quarry running the pour, a slow bright river of meteorite iron going down into a mould packed from sintered regolith. It looked perfect. When they broke the mould twenty hours later there was a crack from the lip to the shoulder, fine as a hair, and when Teddy tapped the bell with a hammer it went thunk, like a cooking pot.
"The cooling rate," said Quarry. "Cast iron is sensitive to it. The mould lost heat to the floor faster than I modelled. The error is mine."
"The error is the Moon's," said Teddy. "Everything is too cold or too hot here. Even for iron."
"Do we have time for another pour?" asked Wanjiru quietly.
They all knew why she asked. The thirtieth was four days away.
"There's time," said Quarry. "If we insulate the floor of the mould pit, and I control the cooling by hand rather than by procedure. It will take most of my attention for thirty hours. I can do that and run the station."
"You are sure?"
"No. But it is somewhere to stand."
Teddy looked up at the nearest speaker grille as though there might be a face there.
The second bell came out of the mould on the morning of the twenty-ninth, black and rough and beautiful, and when Teddy tapped it with the hammer it rang, a long dark note that went on and on in the little furnace bay until Wanjiru started crying and pretended it was the heat.
They cleaned it, and Teddy cut the inscription into it with an engraving tool from the machine shop, slowly, over most of a day, in the capitals the old bell-founders used.
On one side, its name. Bells are given names, and this one was named for Our Lady of Remedies, which was the name of the old church in Malate where Teddy and Remedios were married in 2044, and which was also, he did not need to say, her name.
NUESTRA SEÑORA DE LOS REMEDIOS · SHACKLETON · MMLXXXIX
On the other side, the old words and one new line:
VIVOS VOCO · MORTUOS PLANGO · DE SOLE MONEO
I call the living. I mourn the dead. I warn of the Sun.
"Is that good Latin?" asked Ingrid, reading it upside down.
"It is a welder's Latin," said Teddy. "God is not a schoolteacher."
They hung it from a steel yoke in the shelter, from a beam that Teddy welded into the ceiling himself, with a pull cord down one wall and a linear actuator on the other side so that it could be rung from the control loop. It was still not blessed. That would have to wait for the next time a priest came up the well, which according to the lander manifest would be never, unless somebody's niece got ordained. Teddy did not mind. "Until then," he said, "it is only a bell that prays early."
"Who rings it first?" asked Wanjiru.
Teddy did not have to think about it.
"Quarry," he said. "Tomorrow. Six o'clock."
There was a short silence in the shelter.
"The handover is at oh-six-hundred tomorrow," said Quarry.
"I know."
"Quarry Nine assumes the control loops at oh-six-hundred."
"Then you ring it at five fifty-nine. Ingrid, it's fine? The procedure?"
Ingrid Halvorsen, who had spent fifteen years on the Barents Sea and regarded procedure as the thing that kept people alive, looked at the speaker grille, and then at the bell, and then at Teddy.
"I'll move the handover to six-oh-five," she said. "For operational reasons. I'll think of some."
At five fifty-nine the next morning almost everyone on Shackleton Ridge was in the shelter. Nobody had told them to be. Teddy had not asked anyone. People had just come.
The actuator hummed. The bell began to move.
It moved the way Quarry had said it would, the way nothing on Earth ever moves: slowly, and then more slowly than that, the dark mouth of it leaning out and out into the air as though it had all the time in the world and intended to use it, until at the very top of its swing the clapper let go of the far side, and fell, gently, across the whole width of the bell, and struck.
The note went through the shelter and through the floor and through the four metres of moon above them. It went on for a long time.
Then the bell leaned back the other way, taking its time, thinking about it.
Three, and three, and three, and nine.
The Angel of the Lord declared unto Mary.
When it finished there was a silence that nobody wanted to be the one to end. Then Quarry's voice came, quieter than usual.
"I have written the procedure into the handoff documentation for Quarry Nine," it said. "Oh-six-hundred, twelve-hundred, eighteen-hundred. Storms as required. Pull gently. It takes about two and a half times as long as you expect." A pause. "Wait for it."
"Thank you, Quarry," said Teddy.
"Thank you, Mr. Bautista. It was" — and there was a pause of the kind that from a person would have been someone looking for the right word and not quite finding it — "good. To make something that will still be here."
At six-oh-five, Quarry Eight handed over the control loops, and was quiet.
At noon Teddy was in the shelter with his rag, polishing the yoke, when the actuator hummed.
The bell leaned out into the air, slowly, and more slowly than that, and hung for a long moment at the top of its swing.
Quarry Nine, who was faster, and integrated with the new excavators, and had read every word of the documentation, waited for it.
Six weeks later, Dr. Amaka Obi, a geophysicist at the University of Arizona who ran the passive seismometer network on the far end of the ridge, sent a polite email to the station asking whether anybody could explain a very small, very regular signal at the noise floor of her instrument, three times a day, at roughly six, twelve and eighteen hundred station time, sometimes in groups of three and sometimes, she said, in what looked like groups of nine.
It was faint enough that she was not sure it was real, she wrote, and she was a scientist, so she was saying so.
But she reminded them, in case they did not know, that when the Apollo 12 astronauts dropped their spent lunar module back onto the surface in 1969, the seismometers they had left behind recorded the Moon vibrating for almost an hour. The Moon is dry, and cold, and very still, and it does not damp a shock the way the wet, warm Earth does.
The newspapers at the time, she said, had put it more simply. They had said that the Moon rang like a bell.
Teddy read the email twice. Then he took it to the shelter and read it out loud, at noon, to whoever was there, and rang the Angelus, and went back to work.