Ubbiri had to write a thesis on white dwarf stars. As dictated by academic custom in that culture, her thesis had to connect the six points of the Wheel of Knowing: Meta-networking, Undulant Theory, Fine-Jump Mathematics, Time-Bundles, Poetry, and Love. To enable her to achieve deep-knowing and to therefore truly love the star, she took a ride on the new bristleship with Rudrak. They discovered that when the ship went through the starry core, it entered another reality. This was later called the shadow universe of stars, where their existence and life history is recorded in patterns that no human has completely understood. Some poets call this reality the star’s memory-space, or its consciousness, but Ubbiri thought that was extending metaphor beyond sense. The data from the bristleship told her that this star, this love, had been a golden star in its youth and middle age, harboring six planets (two of which had hosted life), and much space debris. In the late season of its existence it had soared in largeness, dimming and reddening, swallowing its planetary children. Now it was content to bank its fires until death.
After this discovery, Rudrak said, the two of them lived quiet lives that were rich and full. But one day before he was due to take off for another test flight, Ubbiri noticed there was a crack on the heat-shielded viewscreen of the bristleship. Rudrak tested it and repaired it, but Ubbiri was haunted by the possibility of the tiny crack spreading like a web across the viewscreen, and breaking up just as Rudrak was in the star’s heart.
Perhaps that was what she thought when Rudrak disappeared. Rudrak only knew that instead of passing through the shadow universe before coming out, the bristleship took him somewhere else, to a universe so close to his own that he did not know the difference until he had crashlanded on a planet (this planet) and been directed to people who knew the truth. They led him to Birha, who sheltered him for fifteen days, allowed him to mourn and to come slowly to life again. Each time, she sent him back to his universe, as protocol demanded, by way of the alien probability machine, the actualizer. Somehow he was caught in a time-loop that took him back to the day before the ill-fated expedition. He had returned to her in exactly the same way nine times. His return visits were not predictable, being apparently randomly spaced, and her current (and last) calculation was an attempt to predict when he would come next.
Each visit was the same and not the same. Surely he had had less gray hair the last time? And that healed cut on his hand—hadn’t that been from his last trip, when he was trying to help her cut fruit and the knife had slipped? And hadn’t his accent improved just a little bit since last time? They’d had to teach him the language each visit as though it was new, but perhaps it became just a hair’s breadth easier each time?
She tried to make each experience subtly different for him. She was afraid that too drastic a change might upset whatever delicate process was at work in the time-loop. He was like a leaf caught in an eddy—push too hard and the time stream might take him over a precipice. But a little tug here, a tug there, and perhaps he’d land safely on a shore, of this universe or that one.
So far nothing had worked. His bewilderment was the same, each time he appeared on her doorstep, and so was his grief. It was only these small, insignificant things that were different. One time he wore an embroidered collar, another time a plain one. Or the color of his shirt was different.
Birha worked on her calculations, but the kalpa-vriksh gave senseless, contradictory answers.
I remember when I first came to the university, I used to pass a flat-topped boulder on the way to class. There was a depression on the flat surface of the rock in the exact shape of the bottom of a water bowl. When I met Thirru, he told me that the great Timmar Rayan, who had founded the School of Wind and Water, had sat there in daily meditation for three entire cycles, placing his water bowl in the same spot every time. Over the years the depression had developed. I have always marveled that something as unyielding as rock can give way before sheer habit, or regularity, or persistence, whatever you might call it.
Practice, whether in mathematics or in love, changes things.
Sometimes.
It was one thing to realize that the alien device in the center of the chamber was some kind of probability-altering machine. That it was the fabled actualizer hinted at in alien manuscripts, which she had always thought of as myth, was quite another thing. This knowledge she owed to Ubbiri, who was discovered lying on the floor of the chamber not three days after Birha had first opened the round door. Ubbiri was immediately incarcerated for questioning and only after several ten-days, when her language had been deciphered and encrypted into a translation device, had Birha been allowed to speak to her. They said the old woman was mad, babbling about shadow universes and tearing at her silver hair, but Birha found her remarkably sane. Ubbiri told her that she had tired of waiting for her partner, who had disappeared during a flight through a certain white-dwarf star, and when he didn’t return, she had taken an old-model bristleship and dived into the heart of the star. When the ship passed through the core she defied its protestations and stepped out of it, seeking either him or death in the shadowy depths of the other reality. Instead she found herself lying on the floor of the chamber, aged beyond her years.
Over the course of four ten-days of conversation, Birha determined that the constants of nature were a hair’s breadth different where Ubbiri came from, so it was very likely another universe entirely. She realized then that the machine at the center of the room did not merely change probabilities. It was an actualizer: a probability wave interference machine, and the portal inside it led to whatever branch of the kalpa-vriksh you created by changing the parameters. But the portal only opened if you’d satisfied consistency checks and if (as far as the machine could tell) the universe was stable. Somehow the pathways to other universes intersected within the cores of stars, hence Ubbiri’s surprising arrival.
Not long after, Ubbiri died. She left a note stating that there were three things she was grateful for: her white dwarf star, Rudrak, and spending her last days with Birha.
A quarter-cycle after Ubbiri’s death, Rudrak came for the first time into Birha’s life.
There is a rift valley between us, a boundary that might separate two people or two universes. I’ve been exploring there, marveling at the tortured geometries of its sheer walls, the pits and chasms on its floor. Through them I’ve sometimes seen stars. So far I’ve avoided falling in, but who knows? One day maybe I’ll hurtle through the layer between this universe and that, and find myself a meteor, a shooting star falling into the gravity well of a far planet.
What if a meteor changed its mind about falling? Would the universe allow it? Only if the rock fell under the sway of another imperative that lifted it beyond gravity’s grasp. But where, in that endless sky, would it find the rift from which it had emerged? It would have to wander, searching, until the journey became an end in itself. And then, one day when the journey had changed it beyond recognition, it would find the rift and it would stand on the lip of it, wondering: Should I return?
But I am not a rock. I am a person, slowly ripening in the sun of this world, like a pear on a tree. I am not hard, I am not protected by rocky layers.
Still, I cannot soar through your sky without burning.