“Yes, it’s been interesting,” Swan said. “And now Wahram is going to take me down into the rings.”
She followed them to the central dining table, and Wahram introduced her to some more people, whose names she forgot, and they waved or nodded without attempting to say more. After a while they chatted with her a bit, then went back to their conversations and left Wahram and his guest alone. Wahram’s cheeks sported little spots of red, but he seemed pleased too and was easy with his crèchemates as they drifted by on their way out. Maybe on Saturn, Swan thought, this was a rousing party.
Soon after that they took a shuttle to Prometheus, the inner shepherd moon of the F ring. The gravitational sweeps of Prometheus and Pandora, F’s outer shepherd moon, changed in relation to each other in ways that ended up braiding the F ring’s billions of ice chunks into complex streamers, very unlike the smooth sheets of the bigger rings. In effect the F ring was being swirled in the tides created by its two shepherd moons, making for some waves. And where there were waves, there were surfers.
Prometheus proved to be a potato moon, 120 kilometers long. Its biggest crater dimpled the end closest to the F ring and had been domed, and a station set just inside the rim.
Inside the dome a group of ring surfers greeted them and described the local wave, of which they were very proud. Prometheus reached its apoapse, meaning its farthest point away from Saturn, every 14.7 hours; each time it did so, it almost brushed the slowly tumbling wall of ice chunks that composed the inner border of the F ring. Prometheus was moving faster in its orbit than the ice chunks were in theirs, so it tugged a streamer of chunks out behind it as it passed, in a gravitational effect called Keplerian shear. The curving strand of tugged ice always appeared at a regular distance behind Prometheus, as predictable as the wake behind a boat. The wave at each apoapse appeared 3.2 degrees farther along than the previous one, so it was possible to calculate both when and where to drop in and catch it.
“One wave every fifteen hours?” Swan asked.
That was enough, the locals assured her, grinning crazily. She wouldn’t need more. The rides went on for hours.
“Hours?” Swan said.
More crazy grins. Swan turned to Wahram, and as usual could not read his stone face.
“You’re going out too?” she asked.
“Yes.”
“Have you done it before?”
“No.”
She laughed. “Good. Let’s do it.”
The rings could be modeled mathematically as a fluid, and from any distance they looked like a fluid, grooved by tight concentric waves. Up close one could see that the F ring, like the others, was made of ice chunks and ice dust, layered in ribbons that thickened and thinned in masses of individual bodies, all flying at almost the same speed. Gravity: here one saw its effects in a pure state, unobstructed by wind or solar radiation or anything else—just the sling of spinning Saturn and a few small competing tugs, all creating this particular pattern.
Prometheus was a perfect put-in spot for the surfers, and the ones going out with Swan and Wahram informed them they were both going to be launched into the wave with experienced veterans going before and after, to keep tabs and give help if needed. They offered tips for how to catch the wave, but Swan nodded agreeably and forgot their advice: surfing was surfing. You needed to catch the break at its own particular speed, and off you went.
Then they were all suited up and jetting out a lock. The white jumbled wall of the F ring was right there next to them; streamers of denser clusters of rubble were braided and kinked, but the entire mass was extremely flat—no more than about ten meters north to south relative to Saturn. Those ten meters were not the height of their wave but its width—which meant one could pop out of the ice at any point and be spotted and picked up if one was having any kind of trouble. Most of the waves Swan had ridden before were not like that, and she found it reassuring.
They jetted closer and closer to the white wall, until Swan could see discrete ice chunks very clearly, ranging in size from sand grains to suitcases, with the occasional chunk of ice furniture—desk, coffin—tumbling in the midst of things. Once she saw a temporary agglomeration about the size of a small house, but it was coming apart even as she spotted it. And now a white curl of banner was detaching from the wall and flowing down toward Saturn, which though bulking hugely below them was of no interest at all.
Swan tested her jets as she flew toward the wave, pressing with fingertips like a clarinet player, jinking forward in a little sashay of her own device. Suit jets were about the same everywhere. She focused on the approaching wave, which was lifting up and over her like Hiroshige’s wave; this one was ten kilometers high, and rising fast. She needed to turn and accelerate in the direction it was going, but not so quickly that she stayed ahead of it. This was the tricky part—
Then she was in the white stuff and being struck by the bits. She jetted a bit to keep her head out of stuff, as if bodysurfing out of a spume of broken salt water, but it was chunky stuff and she felt herself being thrust forward by little hits from little bits, rather than a mass of water. Then she was at speed with the wave, her head emerging from it so she could look around—very like bodysurfing, and she had to laugh, she had to shout: she was flying in a wave of ice ten kilometers high. She hooted at the sight, she couldn’t help it. The common band was raucous with the other surfers’ yelling.
The wave was really more a slice of a wave, only as wide as a room, and it sometimes felt only a bit thicker than she was—a two-dimensional wave, so to speak, so that it seemed one could get hit sideways, or jet at a slight tangent, and accidentally shoot out the side of it. So it would not do to submerge completely back into the white stuff, dolphin style. Maybe some of the other riders were doing it, but she felt she could get lost in there. Besides, she wanted to see!
She could feel the wave lifting her and casting her along. It was not only being struck by ice chunks, but also being tugged by gravity. The feel of the ice was like getting lightly pummeled by pebbles, which together were knocking her forward. Possibly one could ride a big surfboard on the push of this mass, direct the ride with one’s feet; indeed she saw down the wave someone standing on a thing like a coracle, riding in that very manner. But most of the others were bodysurfing like she was, perhaps because you needed a suit’s jets to make the best moves. In any case she had always preferred bodysurfing to surfing on boards. To be the object of flight, to cast yourself out into the spaces you breathed, and although motionless be flying at speed, slung forward—
The wave pitched and she was knocked forward faster than ever. Most of the chunks were between tennis balls and basketballs in size, and if she emerged on her jets until only her feet were in the mass, she could hop on bigger chunks and propel herself with little jumps forward and out. The wave was still surging up, but it was like the wake of a boat, in that there was no bottom to catch the submerged half of the wave and cause the upper part to curl and break. So from now on it would lose energy, and eventually dissipate without ever breaking. Too bad in a way, but now it was time to dance!
She jumped onto larger pieces when opportunities presented themselves, and with one jump after another got just where she wanted to be, on the border between the white flock of ice and the empty black space it was rushing into; and then she was dancing on white boulders, glissading on a kind of moving scree, as if running down a mountainside that had gone liquid. She laughed briefly as she got the hang of it. There was still a lot of hooting and hollering on the common band. The figure nearest her was possibly Wahram, hopping along with remarkable agility, like the dancing hippos in Fantasia. She laughed to see it. She could feel Prometheus tugging her along; this must be what a pelican felt like, surfing the air pushed up by a water wave. A gravity wave, throwing her through the universe. The howls of the other surfers sounded like wolves.
Back under the dome on Prometheus, out of their suits, Swan gave Wahram a sweaty hug. “Thank you for that!” she said. ?
??I needed that! It reminded me that… it reminded me… Well. It was good.”
Wahram was red-faced, puffing with exertion. He nodded once, his mouth pursed in a solemn little knot.
“Well what did you think?” she cried. “Did you enjoy it?”
“It was interesting,” he said.
Lists (9)
Boosters to get off planets, Earth especially, need high thrust
Orbit-to-orbit interplanetary rockets need high exhaust velocity to save on fuel weights.
Deuterium-helium-3 fusion spheromak engine, built on Luna, use began in 2113;
Antimatter plasma core, magnetic bottle, Martian design, 2246;
Deuterium-tritium fusion, with lithium-blanketed core to create more tritium in the burn, Luna, 2056; two have lost thrust chamber integrity and exploded with loss of all hands;
Laser thermal, mainly used within the Jupiter and Saturn leagues for local transport, 2221;
Mass drivers for the terraria, 2090; often called the workhorse;
Inertial confinement fusion, Mars, 2237;
Micro-fission Orion format, subcritical pellets of curium-245 compressed to fission by Z-pinch, magnetic thrust to the pusher plate of the rocket, Callisto, 2271;
Orion style (external pulsed plasma propulsion), Luna, 2106
Magnetoplasmadynamic engine, propellant potassium seeded helium, Callisto, 2284;
Emergency propulsion system for disabled vessels, a “solar moth” where half of a balloon is silvered and sunlight is reflected onto a window chamber hoop boiler, where hydrogen seeded with alkali metals serves as the propellant. Tiny exhaust velocities and not powerful beyond Mars, but very compact until deployed, Mars, 2099;
Variable Specific Impulse Magnetoplasma, which can “shift gears” from high thrust to high exhaust velocity, depending on need, Callisto, 2278;
advances in physics, materials science, and rocketry, plus a growing desire for improvements in speed and fuel efficiencies, now drive an industrial race for new designs, dominated by organizations on Luna, Mars, and Callisto, so we can expect to see
KIRAN AND LAKSHMI
The next time he was passing through the Cleopatra train station, Kiran called the number Swan had given him, and the call was picked up by Lakshmi herself. When he explained how he had gotten the number, she gave him directions to a noodle house near him and told him she would be there in an hour, and she was. She turned out to be a Venusian native in the classic mold—tall, dark, handsome, taciturn. Her combination of Chinese ancestry and Indian name resembled that of some others he had met; he had been given to understand it marked Venusians who wanted some separation from the old country, with the name being a way of saying they were more Venusian than Chinese.
“Don’t stop working for Shukra,” Lakshmi told him immediately, even though Shukra had left him in a state of xuanfu (drifting chaos). She would help him to get to cuo suo. (Both meant “place,” Kiran’s translation belt told him, but suo was one’s own place, meaning also his work unit.) She would give him a better assignment, which would involve serving as a courier in his travels, moving things and information from one xiaojinku to another. Xiaojinku, small gold-storage centers: this sounded good to Kiran. He agreed to do it. Only then did Lakshmi tell him that he would be paid in yinxing gongzi, invisible wages. That didn’t sound as good, but something in the way she said it made him think it would be all right.
At the end of her description of his new job, Lakshmi stared at him. “Shukra got you from Swan Er Hong, but he did not use you. Does he think you are stupid? Or maybe Swan? Or me?”
Kiran almost said, Maybe Shukra is the stupid one, but Lakshmi did not actually seem to expect him to reply. She got up and left, and an hour later he had a new ID number, thus a whole new identity and name. None of which seemed to matter to anyone. His first assignment from Lakshmi was to courier a small packet from Cleopatra back to Colette; he was to fly back, to get there faster. With the packet, Lakshmi gave him a pair of translating glasses, which looked like thick old-fashioned black spectacles, with speakers in the earpieces. “Better translator,” she explained.
So he booked a flight, and in the process found that his new identity had quite a number of credits—so many it was a little scary. But interesting too, to see what kind of resources Lakshmi commanded. Maybe a whole xiaojinku, or more than one. People in his old work unit had said she was in the Working Group, and the Working Group ruled the planet.
Certainly her translator glasses were an upgrade; when he looked at Chinese language signs, with all their intricate ideograms, he now saw them overlaid in glowing red with the words rendered in English. It was startling to discover just how much information was written into the cityscape, now in glowing red: Beware of the Three Withouts. Vote for Stormy Chang. Towering Mountain Beer. The Door in the Middle of Half the Sky Alterations. A gender clinic, apparently. One could also Give Father a Second Sister.
Then he was off on a plane, then up above the turbulent clouds, into the permanent night under Venus’s sunshield. Only starlight illuminated the cloudtops below. Being in a jet reminded him of Earth. Out the window Earth itself made for a bluish double star overhead, with Earth twice as bright as Luna, the two together jewel-like and a little bit heart-stopping. Then the clouds below cleared, and he could see broken chopped jumbled ridges—the Maxwell Montes, apparently. They formed a giant mountain range, Venus’s Himalayas.
In Colette he gave Lakshmi’s packet to a person who approached him at his lodge entrance, and two days later the same person came by and asked him to take another packet to Cleopatra, on another flight.
Back in Cleopatra Kiran went up to the promenade running around the crater circumference just inside the dome, as instructed. Snow flowed down the outside of the dome in a perpetual avalanche. The packet was to be taken to point 328 on the dial of 360 degrees that divided the rim promenade. He found that the rail on the promenade was numbered as if in an arena concourse. The person waiting for him at 328, a small of indeterminate gender, spoke in Chinese. “We are the night runners of Bengal, very important work,” Kiran’s glasses translated out loud, causing a smile from the speaker, who apparently understood English; the glasses must have said something funny, but Kiran didn’t know what it was. “Tell me more about that,” he said quickly, and the small led him to a nearby bar.
Kexue (Science) sat on the bar’s edge while Kiran sat on a stool, and for a couple of hours Kiran listened to stories muttered in his ear by his glasses, stories that made little sense to him but were interesting anyway. They were part of a project, Lakshmi was a goddess, Science had once kissed her foot and almost electrocuted humble self; one could not touch the gods, but only obey. When they parted, Kiran got Kexue’s number and a promise to get together again.
His run back to Colette, with another packet, was to be on the ground this time, in a dedicated rover. He found he was only honorary pilot at best of this squat rover with six wheels, as it ran by AI. It was pretty fast, humming over a road of crushed rock and hard-packed gravel and passing enormous mining trucks with deft lane changes. The cab of the rover tilted backward, it seemed from the weight in the freight compartment behind. The freight had not been identified for him, but there was a dosimeter clicking steadily away on the dash. Uranium, maybe? The packet Kexue had given him was not sealed, and he checked in it, hoping this action would not be detectable, and saw that he was carrying a number of handwritten notes. Their Chinese letters scrawled like drunken calligraphy and were surrounded by little sketch drawings of birds and animals. His glasses overlaid the letters with red words:
Only he who has eyes can see.
In great attempts it is glorious even to fail.
Seemed like codes to him. Whether the messages were personal or official, important or routine, he could not know. At one point his glasses had translated Kexue as saying that to circumvent both Shukra and the qubes, Lakshmi was being forced to keep to just a word in the ear. Maybe these notes were part of that. Th
ings were very, very unclear at the top, Kexue had said.
“Like in China?” Kiran had asked.
“No,” Kexue had said. “Not like China.”
Back in Colette, Kiran gave the packet to the same person outside his lodge door, then rejoined his work unit and spent a few weeks back on the ice, then got another call from Lakshmi and went to Cleopatra to get another packet. That happened quite a few times, with nothing in particular to distinguish each instance. As Kiran continued to live with his work unit in Colette and perform work associated with Shukra, he supposed he might have accidentally become some kind of mole or double agent, but he couldn’t be sure. He would have to call on Swan for his defense if anyone got annoyed. One day he found out by accident, when pushing his translation glasses back up on his nose, that they would translate with the red words floating on the lenses from spoken Chinese as well as written ideograms. This was a great discovery, and helped him both to learn faster and to stay in the game while he did learn. Red writing plastered over the visible world—it could be disconcerting, but it was so nice to have things explained at last. He kept it on more than off.
So, message packets and the occasional radioactive rover were couriered by him back and forth over the Spine of Ishtar. Looking at the map, Kiran saw that the giant high plateau that dominated the western half of Ishtar (and would that be the Shoulders of Ishtar or the Butt of Ishtar?) was named Lakshmi Planum. He didn’t know if this was a coincidence or an allusion. He had to wear a personal dosimeter, and the millisieverts clicked on up. It was lucky that the longevity treatments had good mutation repair therapies!
He made many drives alone, and the AIs on board the squat rovers were simple indeed. The translator glasses were turning out to be much like a dog, attentive but predictable. He had never liked dogs, but in the struggle to understand his situation, he had to like this one.