minute or so, on a global scale. He remembered twenty-first century schemes to increase Earth’s albedo — to increase the percentage of sunlight reflected back into space — by firing submicrometer dust up into the stratosphere: Naval guns could have done the job. The point was to reduce global warming. But the dust would settle out: You would have needed to fire a shot every few seconds, maintained for decades, even centuries. Back then the idea was ridiculed. But such dust injections would account for the increase in global brightness he thought he’d observed.
This was planetary engineering. All he could see from here were the gross physical schemes. Maybe down on the planet there was more: nanotechnological adjustments, for instance.
Somebody was fixing the Earth. It didn’t look to Malenfant like it was anybody human. It would, after all, take centuries, maybe millennia. No human civilization could handle projects of that duration, or ever would be able to. So, give the job to somebody else.
Not every change was constructive.
In southern Africa there was a dramatic new crater. It looked like a scar in the greenery of the planet. He didn’t know if it was some kind of meteorite scar or an open-cast mine kilometers wide. Machines crawled over the walls and pit of the crater, visibly chewing up shattered rock, extracting piles of minerals, metals. From space, the machines looked like spiders: dodecahedral bodies maybe fifty meters wide, with eight or ten articulated limbs, working steadily at this open wound in the skin of Earth.
Malenfant had seen such machines before. They were Gaijin factory drones, designed to chew up ice and rock. But now they weren’t off in the asteroid belt or stuck out on the cold rim of the Solar System billions of kilometers away. The Gaijin were
He looked farther afield, seeking people, civilization.
The most populous place on the planet, it appeared, was some kind of mountaintop community in the middle of Africa. It was, as far as he could remember his geography, in Uganda.
And there was something odd about its signature in his sensor pack. From a source at the center of the community he plotted heavy particles, debris from what looked like short half-life fission products. And there were some much more energetic particles: almost like cosmic rays.
But they came from a source embedded deep within Earth itself.
The only other similar sources, scattered around the planet, looked like deep radioactive-waste dumps.
The Ugandan community wasn’t civilization, but it was the most advanced-looking technological trace on the planet. Population, and an enigma. Maybe that was the place for him to go.
The Bad Hair Day twins showed him a wooden spaceship. It was, good God, his atmospheric entry capsule. It was like a seed pod, a flattened sphere of wood a couple of meters across. It was fitted with a basic canvas couch and a life support system — just crude organic filters — that would last a couple of hours, long enough for the entry. The pod even had a window, actually grown into the wood, a blister of some clear stuff like amber. He would have to climb in through a dilating diaphragm that would seal up behind him, like being born in reverse.
He spent some time hunting out the pod’s heat shield. The Bad Hair Day twins watched, puzzled.
They kept him on orbit for another month or so, giving him gravity preparation: exercise, a calcium booster, electromagnetic therapy. They gave him a coverall of some kind of biocomposite material, soft to the touch but impossible to rip, smart enough to keep him at the right temperature. He packed inside the sphere his sole personal possession: his old shuttle pressure suit, with its faded Stars and Stripes and the NASA logo, that he’d worn when he flew through that first gateway, a thousand AU from home, a thousand years ago. It was junk, but it was all he had.
He enjoyed a last sleep in weightlessness.
When he awoke the Tree was passing over South America. Malenfant could see the fresh water of the Amazon, noticeably paler than the salt of the ocean, the current so strong the waters had still failed to mingle hundreds of kilometers offshore.
He climbed inside his capsule. The Bad Hair Day twins kissed him, one soft face to either cheek, and sealed him up in warm brown darkness.
He was whiplashed out of the Tree by a flexing branch. A sensation of weight briefly returned to Malenfant, and he was pressed into his seat. When the castoff was done, the weight disappeared.
But now the pod was no longer in a free orbit, but falling rapidly toward the air.
At the fringe of the atmosphere, the pod shuddered around him. He felt very aware of the lightness and fragility of this wooden nutshell within which he was going to have to fall ass-first into the atmosphere.
Within five minutes of separation from the Tree, frictional deceleration was building up: a tenth, two-tenths of a g. The deceleration piled up quickly, eyeballs-in, shoving him deeper against his couch.
The pod shuddered violently. Malenfant was cocooned in a dull roaring noise. He gripped his couch and tried not to worry about it.
As the heat shield rammed deeper into the air, a shell of plasma built up around the hull. Beyond the amber windows the blackness of space was masked by a deep brown, which quickly escalated through orange, a fiery yellow, and then a dazzling white. Particles of soot flew off the scorching outer hull of the pod and streaked over the window, masking his view; now all he could see were extreme surges of brightness, as if fireballs were flying past the craft.
From the surface of Earth, the ship would be a brilliant meteor, visible even in daylight. He wondered if there was anybody down there who would understand what they saw.
The oaklike wood of the hull made for a natural heat shield, the Bad Hair Day twins had told him. All that resin would ablate naturally. It was a neater solution than the crude, clanking mechanical gadgets of his own era. Maybe, but he was an old-fashioned guy; he’d have preferred to be surrounded by a few layers of honest-to-God metal and ceramic.
The glow started to fade, and the deceleration eased. Now the windows were completely blacked over by the soot, but a shield jettisoned with a bang, taking the soot away with it and revealing a circle of clear blue sky.
There was another crack as the first parachute deployed. The chute snatched at the pod and made it swing violently from side to side. He was pressed against one side of his couch and then the other, with the cabin creaking around him; he felt fragile, helpless, trapped in the couch.
Two more drogue chutes snapped open, in quick succession, and then the main chute. He could see through his window a huge canopy of green leafy material, like a vegetable cloud against the blue sky. The chute looked reassuringly intact, despite its vegetable origins, and the swaying reduced.
Malenfant glimpsed the ground. He could even track his progress, with maps in his sensor pack. He’d come down over the island that used to be called Zanzibar, on the east coast of Africa. And now he was drifting inland, to the northwest, toward Lake Victoria. Forest lay like thick green cloth over mountains.
Malenfant felt his couch rise up beneath him. Collapsing sacs pumped compressed carbon dioxide into the base of his seat, preparing to act as a shock absorber on landing. He was pressed up against the curved roof of his pod, with only a small gap between his knees and the roof itself. He felt hemmed in, heavy, hot. Gravity pulled at him, tangibly.
The pod hit the ground.
The parachutes pulled the capsule forward, so Malenfant was tipped up onto his face, and then the pod started to careen across rocky ground, rocking backward and forward, spinning and rattling. His head rattled against his couch headrest.
Finally the pod slithered to a halt.
Malenfant found himself suspended on his side, with daylight pouring through the window behind him. The shock absorber was still pressing him against the roof, so he couldn’t see outside. He lifted his hands to his face. There was blood in his mouth.
The pod wall dilated, releasing a flood of hot sunlit air into the capsule, so rich in oxygen and vegetable scents it made him gasp.
He began the painful process of climbing out.
His pod had come down on a low pebbly beach. The beach ran in a sinuous light-gray line between the darker gray face of a lake and the living green of a banana grove. From the margin of the lake to the highest hilltop, all he could see was contrasting shades of green, spreading like a carpet.
This was the northern coast of Lake Victoria. It was the closest place to that population center, with its odd radioactivity signature, that the Bad Hair Day twins would deliver him.
Once he got his balance, he didn’t have any trouble walking. He didn’t feel dizzy, but oddly disoriented. He could feel his internal organs moving around, seeking a new equilibrium inside him. And he seemed to be immune to sunburn.
But it was odd to be walking around without his pressure suit. Disconcerting. And the sense of openness, of scale, was startling. After all his travels, Malenfant had become an alien, uncomfortable on the surface of his home world.
There was no sign of humanity.
Malenfant made camp in the inert, scorched shell of his pod. He used the bubble helmet of his old NASA pressure suit to collect water from a brook, a little way inland. He ate figs and bananas. He figured if he was stuck here for long he’d try to fish that lake.
The days were short and hot, although there was usually a scattering of cloud over the blue sky. He set up a stick in the sand and watched its shadow shifting and lengthening with the hours. That way he figured out the time of local noon, and he reset his astronaut’s watch. If he was stuck here long enough he might find the equinox and start filling out a calendar.
The sunsets were spectacular. All the submicrometer dust.
The nights were cold, and he would wrap himself up inside the Beta-cloth outer layers of his pressure suit, there on the beach. But he stayed awake long hours, studying a changed sky.
The crescent Moon glowed blue.
The crescent’s edge was softly blurred by a band of light that stretched partway around the dark half of the satellite. There was a thick band of what looked like cloud, piled up over the Moon’s equator. On the darkened surface itself there were lights, strung out in lines: towns, or cities, outlining hidden lunar continents. The Moon had a twin light: a giant mirror that orbited it slowly, shedding light on the Moon’s shadowed hemisphere, which would otherwise languish in the dark for fourteen days at a time, probably long enough for the precious new air to start snowing out.
And in the center of the darkened hemisphere that faced him was a dazzling point glow. The point source was Earthlight, reflecting from the oceans of the Moon.
Even a slim crescent Moon, now, drenched the sky with light, drowning out the stars and planets. The wildlife of Earth made use of the new light: He heard the croak of amphibians, the growl of some kind of cat. No doubt this changed Moon was working on the evolution of species, subtly.
The Moon was beautiful, wonderful, its terraforming one heck of an achievement. But to Malenfant it was as unreachable as before Apollo, a thousand years ago. And, even from here, Malenfant could see Gaijin craft orbiting over the lunar poles.
When the Moon set, taking its brilliant light with it, the full strangeness of the sky emerged.
Huge objects drifted against the blackness, green and gold: Trees, spectral patches of green life; and Gaijin flower-ships, their open ramscoop mouths tangles of silvery threads, like dragonflies. There was a chain of lights clustered around the plain of the ecliptic, sparkles in knots and clusters, almost like streetlights seen from orbit. They were Gaijin asteroid-belt cities.
The shapes of the constellations were mostly unchanged, the stars’ slow drift imperceptible in the mayfly beat he’d been away. A bright young star had come to life in Cassiopeia, turning that distinctive W shape into a zig zag. But many more stars had dimmed, to redness or even lurid green — or they were missing altogether, masked by life. This was the mark of the colonization wave, pulsing along the Galaxy’s star lanes, an engineered consumption of system after system, heading this way.
And in one part of the sky, loosely centered on the grand old constellation of Orion, stars were flickering, burning, sputtering to darkness. It was evidence of purposeful activity spread across many light-years, and it made him shiver. Perhaps it was the war he had come to fear, breaking over the Solar System.
In the deepest dark of the nights he made out a huge, beautiful comet, sprawled across the zenith. Even with his naked eye he could see the bright spark of its nucleus, a tail that swept, feathery, curved, across the dome of the sky.
Comets came from the Oort cloud. He wondered if there was any connection between this shining visitor, flying through the heart of the inner Solar System, and the sparkling lights he saw
