That was over. Concentrate on the present. One foot in front of the other. Again. Again.
The undervoltage alarm chimed again. Dust, already?
She looked down at her navigation aid and realized with a shock that she had walked a hundred and fifty kilometers.
Time for a break anyway. She sat down on a boulder, fetched a snack-pack out of her carryall, and set a timer for fifteen minutes. The airtight quick-seal on the food pack was designed to mate to the matching port in the lower part of her faceplate. It would be important to keep the seal free of grit. She verified the vacuum seal twice before opening the pack into the suit, then pushed the food bar in so she could turn her head and gnaw off pieces. The bar was hard and slightly sweet.
She looked west across the gently rolling plain. The horizon looked flat, unreal; a painted backdrop barely out of reach. On the moon, it should be easy to keep up a pace of fifteen or even twenty miles an hour—counting time out for sleep, maybe ten. She could walk a long, long way.
Karen would have liked it; she'd always liked hiking in desolate areas. "Quite pretty, in its own way, isn't it, Sis?" Trish said. "Who'd have thought there were so many shadings of grey? Plenty of uncrowded beach. Too bad it's such a long walk to the water."
Time to move on. She continued on across terrain that was generally flat, although everywhere pocked with craters of every size. The moon is surprisingly flat; only one percent of the surface has a slope of more than fifteen degrees. The small hills she bounded over easily; the few larger ones she detoured around. In the low gravity this posed no real problem to walking. She walked on. She didn't feel tired, but when she checked her readout and realized that she had been walking for twenty hours, she forced herself to stop.
Sleeping was a problem. The solar arrays were designed to be detached from the suit for easy servicing, but had no provision to power the life-support while detached. Eventually she found a way to stretch the short cable out far enough to allow her to prop up the array next to her so she could lie down without disconnecting the power. She would have to be careful not to roll over. That done, she found she couldn't sleep. After a time she lapsed into a fitful doze, dreaming not of the Moonshadow as she'd expected, but of her sister, Karen, who—in the dream—wasn't dead at all, but had only been playing a joke on her, pretending to die.
She awoke disoriented, muscles aching, then suddenly remembered where she was. The Earth was a full handspan above the horizon. She got up, yawned, and jogged west across the gunpowder-grey sandscape.
Her feet were tender where the boots rubbed. She varied her pace, changing from jogging to skipping to a kangaroo bounce. It helped some; not enough. She could feel her feet starting to blister, but knew that there was no way to take off her boots to tend, or even examine, her feet.
Karen had made her hike on blistered feet, and had had no patience with complaints or slacking off. She should have broken her boots in before the hike. In the one-sixth gee, at least the pain was bearable.
After a while her feet simply got numb.
Small craters she bounded over; larger ones she detoured around; larger ones yet she simply climbed across. West of Mare Smythii she entered a badlands and the terrain got bumpy. She had to slow down. The downhill slopes were in full sun, but the crater bottoms and valleys were still in shadow.
Her blisters broke, the pain a shrill and discordant singing in her boots. She bit her lip to keep herself from crying and continued on. Another few hundred kilometers and she was in Mare Spumans—"Sea of Froth"—and it was clear trekking again. Across Spumans, then into the north lobe of Fecundity and through to Tranquility. Somewhere around the sixth day of her trek she must have passed Tranquility Base; she carefully scanned for it on the horizon as she traveled but didn't see anything. By her best guess she missed it by several hundred kilometers; she was already deviating toward the north, aiming for a pass just north of the crater Julius Caesar into Mare Vaporum to avoid the mountains. The ancient landing stage would have been too small to spot unless she'd almost walked right over it.
"Figures," she said. "Come all this way, and the only tourist attraction in a hundred miles is closed. That's the way things always seem to turn out, eh, Sis?"
There was nobody to laugh at her witticism, so after a moment she laughed at it herself.
Wake up from confused dreams to black sky and motionless sunlight, yawn, and start walking before you're completely awake. Sip on the insipid warm water, trying not to think about what it's recycled from. Break, cleaning your solar arrays, your life, with exquisite care. Walk. Break. Sleep again, the sun nailed to the sky in the same position it was in when you awoke. Next day do it all over. And again. And again.
The nutrition packs are low-residue, but every few days you must still squat for nature. Your life support can't recycle solid waste, so you wait for the suit to desiccate the waste and then void the crumbly brown powder to vacuum. Your trail is marked by your powdery deposits, scarcely distinguishable from the dark lunar dust.
Walk west, ever west, racing the sun.
Earth was high in the sky; she could no longer see it without craning her neck way back. When the Earth was directly overhead she stopped and celebrated, miming the opening of an invisible bottle of champagne to toast her imaginary traveling companions. The sun was well above the horizon now. In six days of travel she had walked a quarter of the way around the moon.
She passed well south of Copernicus, to stay as far out of the impact rubble as possible without crossing mountains. The terrain was eerie, boulders as big as houses, as big as shuttle tanks. In places the footing was treacherous where the grainy regolith gave way to jumbles of rock, rays thrown out by the cataclysmic impact billions of years ago. She picked her way as best she could. She left her radio on and gave a running commentary as she moved. "Watch your step here, footing's treacherous. Coming up on a hill; think we should climb it or detour around?"
Nobody voiced an opinion. She contemplated the rocky hill. Likely an ancient volcanic bubble, although she hadn't realized that this region had once been active. The territory around it would be bad. From the top she'd be able to study the terrain for a ways ahead. "Okay, listen up, everybody. The climb could be tricky here, so stay close and watch where I place my feet. Don't take chances better slow and safe than fast and dead. Any questions?" Silence; good. "Okay, then. We'll take a fifteen minute break when we reach the top. Follow me."
Past the rubble of Copernicus, Oceanus Procellarum was smooth as a golf course. Trish jogged across the sand with a smooth, even glide. Karen and Dutchman seemed to always be lagging behind or running up ahead out of sight. Silly dog still followed Karen around like a puppy, even though Trish was the one who fed him and refilled his water dish every day since Karen went away to college. The way Karen wouldn't stay close behind her annoyed Trish. Karen had promised to let her be the leader this time—but she kept her feelings to herself. Karen had called her a bratty little pest, and she was determined to show she could act like an adult. Anyway, she was the one with the map. If Karen got lost, it would serve her right.
She angled slightly north again to take advantage of the map's promise of smooth terrain. She looked around to see if Karen was there, and was surprised to see that the Earth was a gibbous ball low down on the horizon. Of course, Karen wasn't there. Karen had died years ago. Trish was alone in a spacesuit that itched and stank and chafed her skin nearly raw across the thighs. She should have broken it in better, but who would have expected she would want to go jogging in it?
It was unfair how she had to wear a spacesuit and Karen didn't. Karen got to do a lot of things that she didn't, but how come she didn't have to wear a spacesuit? Everybody had to wear a spacesuit. It was the rule. She turned to Karen to ask. Karen laughed bitterly. "I don't have to wear a spacesuit, my bratty little sister, because I'm dead. Squished like a bug and buried, remember?"
Oh, yes, that was right. Okay, then, if Karen was dead, then she didn't have to wear a sp
acesuit. It made perfect sense for a few more kilometers, and they jogged along together in companionable silence until Trish had a sudden thought. "Hey, wait—if you're dead, then how can you be here?"
"Because I'm not here, silly. I'm a fig-newton of your overactive imagination."
With a shock, Trish looked over her shoulder. Karen wasn't there. Karen had never been there.
"I'm sorry. Please come back. Please?"
She stumbled and fell headlong, sliding in a spray of dust down the bowl of a crater. As she slid she frantically twisted to stay face-down, to keep from rolling over on the fragile solar wings on her back. When she finally slid to a stop, the silence echoing in her ears, there was a long scratch like a badly healed scar down the glass of her helmet. The double reinforced faceplate had held, fortunately, or she wouldn't be looking at it.
She checked her suit. There were no breaks in the integrity, but the titanium strut that held out the left wing of the solar array had buckled back and nearly broken. Miraculously there had been no other damage. She pulled off the array and studied the damaged strut. She bent it back into position as best she could, and splinted the joint with a mechanical pencil tied on with two short lengths of wire. The pencil had been only extra weight anyway; it was lucky she hadn't thought to discard it. She tested the joint gingerly. It wouldn't take much stress, but if she didn't bounce around too much it should hold. Time for a break anyway.
When she awoke she took stock of her situation. While she hadn't been paying attention, the terrain had slowly turned mountainous. The next stretch would be slower going than the last bit.
"About time you woke up, sleepyhead," said Karen. She yawned, stretched, and turned her head to look back at the line of footprints. At the end of the long trail, the Earth showed as a tiny blue dome on the horizon, not very far away at all, the single speck of color in a landscape of uniform grey. "Twelve days to walk halfway around the moon," she said. "Not bad, kid. Not great, but not bad. You training for a marathon or something?"
Trish got up and started jogging, her feet falling into rhythm automatically as she sipped from the suit recycler, trying to wash the stale taste out of her mouth. She called out to Karen behind her without turning around. "Get a move on, we got places to go. You coming, or what?"
In the nearly shadowless sunlight the ground was washed-out, two-dimensional. Trish had a hard time finding footing, stumbling over rocks that were nearly invisible against the flat landscape. One foot in front of the other. Again. Again.
The excitement of the trek had long ago faded, leaving behind a relentless determination to prevail, which in turn had faded into a kind of mental numbness. Trish spent the time chatting with Karen, telling the private details of her life, secretly hoping that Karen would be pleased, would say something telling her she was proud of her. Suddenly she noticed that Karen wasn't listening; had apparently wandered off on her sometime when she hadn't been paying attention.
She stopped on the edge of a long, winding rille. It looked like a riverbed just waiting for a rainstorm to fill it, but Trish knew it had never known water. Covering the bottom was only dust, dry as powdered bone. She slowly picked her way to the bottom, careful not to slip again and risk damage to her fragile life-support system. She looked up at the top. Karen was standing on the rim waving at her. "Come on! Quit dawdling, you slowpoke—you want to stay here forever?"
"What's the hurry? We're ahead of schedule. The sun is high up in the sky, and we're halfway around the moon. We'll make it, no sweat."
Karen came down the slope, sliding like a skier in the powdery dust. She pressed her face up against Trish's helmet and stared into her eyes with a manic intensity that almost frightened her. "The hurry, my lazy little sister, is that you're halfway around the moon, you've finished with the easy part and it's all mountains and badlands from here on, you've got six thousand kilometers to walk in a broken spacesuit, and if you slow down and let the sun get ahead of you, and then run into one more teensy little problem, just one, you'll be dead, dead, dead, just like me. You wouldn't like it, trust me. Now get your pretty little lazy butt into gear and move!"
And, indeed, it was slow going. She couldn't bound down slopes as she used to, or the broken strut would fail and she'd have to stop for painstaking repair. There were no more level plains; it all seemed to be either boulder fields, crater walls, or mountains. On the eighteenth day she came to a huge natural arch. It towered over her head, and she gazed up at it in awe, wondering how such a structure could have been formed on the moon.
"Not by wind, that's for sure," said Karen. "Lava, I'd figure. Melted through a ridge and flowed on, leaving the hole; then over the eons micrometeoroid bombardment ground off the rough edges. Pretty, though, isn't it?"
"Magnificent."
Not far past the arch she entered a forest of needle-thin crystals. At first they were small, breaking like glass under her feet, but then they soared above her, six-sided spires and minarets in fantastic colors. She picked her way in silence between them, bedazzled by the forest of light sparkling between the sapphire spires. The crystal jungle finally thinned out and was replaced by giant crystal boulders, glistening iridescent in the sun. Emeralds? Diamonds?
"I don't know, kid. But they're in our way. I'll be glad when they're behind us."
And after a while the glistening boulders thinned out as well, until there were only a scattered few glints of color on the slopes of the hills beside her, and then at last the rocks were just rocks, craggy and pitted.
Crater Daedalus, the middle of the lunar farside. There was no celebration this time. The sun had long ago stopped its lazy rise, and was imperceptibly dropping toward the horizon ahead of them.
"It's a race against the sun, kid, and the sun ain't making any stops to rest. You're losing ground."
"I'm tired. Can't you see I'm tired? I think I'm sick. I hurt all over. Get off my case. Let me rest. Just a few more minutes? Please?"
"You can rest when you're dead." Karen laughed in a strangled, high-pitched voice. Trish suddenly realized that she was on the edge of hysteria. Abruptly she stopped laughing. "Get a move on, kid. Move!"
The lunar surface passed under her, an irregular grey treadmill.
Hard work and good intentions couldn't disguise the fact that the sun was gaining. Every day when she woke up the sun was a little lower down ahead of her, shining a little more directly in her eyes.
Ahead of her, in the glare of the sun she could see an oasis, a tiny island of grass and trees in the lifeless desert. She could already hear the croaking of frogs: braap, braap, BRAAP!
No. That was no oasis; that was the sound of a malfunction alarm. She stopped, disoriented. Overheating. The suit air conditioning had broken down. It took her half a day to find the clogged coolant valve and another three hours soaked in sweat to find a way to unclog it without letting the precious liquid vent to space. The sun sank another handspan toward the horizon.
The sun was directly in her face now. Shadows of the rocks stretched toward her like hungry tentacles, even the smallest looking hungry and mean. Karen was walking beside her again, but now she was silent, sullen.
"Why won't you talk to me? Did I do something? Did I say something wrong? Tell me."
"I'm not here, little sister, I'm dead. I think it's about time you faced up to that."
"Don't say that. You can't be dead."
"You have an idealized picture of me in your mind. Let me go. Let me go!"
"I can't. Don't go. Hey—do you remember the time we saved up all our allowances for a year so we could buy a horse? And we found a stray kitten that was real sick, and we took the shoebox full of our allowance and the kitten to the vet, and he fixed the kitten but wouldn't take any money?"
"Yeah, I remember. But somehow we still never managed to save enough for a horse." Karen sighed. "Do you think it was easy growing up with a bratty little sister dogging my footsteps, trying to imitate everything I did?"
"I wasn't either bratt
y."
"You were too."
"No, I wasn't. I adored you." Did she? "I worshipped you."
"I know you did. Let me tell you, kid, that didn't make it any easier. Do you think it was easy being worshipped? Having to be a paragon all the time? Christ, all through high school, when I wanted to get high, I had to sneak away and do it in private, or else I knew my damn kid sister would be doing it too."
"You didn't. You never."
"Grow up, kid. Damn right I did. You were always right behind me. Everything I did, I knew you'd be right there doing it next. I had to struggle like hell to keep ahead of you, and you, damn you, followed effortlessly. You were smarter than me—you know that, don't you?—and how do you think that made me feel?"
"Well, what about me? Do you think it was easy for me? Growing up with a dead sister—everything I did, it was 'Too bad you can't be more like Karen' and 'Karen wouldn't have done it that way' and 'If only Karen had. . . .' How do you think that made me feel, huh? You had it easy—I was the one who had to live up to the standards of a goddamn angel."
"Tough breaks, kid. Better than being dead."
"Damn it, Karen, I loved you. I love you. Why did you have to go away?"
"I know that, kid. I couldn't help it. I'm sorry. I love you too, but I have to go. Can you let me go? Can you just be yourself now, and stop trying to be me?"
"I'll . . . I'll try."
"Goodbye, little sister."
"Goodbye, Karen."
She was alone in the settling shadows on an empty, rugged plain. Ahead of her, the sun was barely kissing the ridgetops. The dust she kicked up was behaving strangely; rather than falling to the ground, it would hover half a meter off the ground. She puzzled over the effect, then saw that all around her, dust was silently rising off the ground. For a moment she thought it was another hallucination, but then realized it was some kind of electrostatic charging effect. She moved forward again through the rising fog of moondust. The sun reddened, and the sky turned a deep purple.
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