Читать книгу Europa Strike - Ian Douglas, Matthew Taylor - Страница 10

12 OCTOBER 2067

U.S.S. John F. Kennedy

Solar orbit, 4.2 a.u. from Earth

2002 hours Zulu

Captain Jeremy Mitchell entered the officer’s wardroom with his tray and walked toward the only occupied table. Gone were the days when the other officers present stood until he was seated; the JFK’s officer’s mess was patterned off of the dirty shirt mess decks of Navy aircraft carriers, with food served cafeteria style. It was located in “A” Hab, with the hab rotation set to deliver a gentle third of a gravity.

“Mind if I join you gentlemen?” he asked with an easy drawl. Mitchell was from a small town not far from San Antonio, Texas, and liked to affect the laid-back attitude of Texas and good-natured down-home.

“Please do, Captain!” Commander Varley, the weapons officer, said, gesturing.

He set his tray down and took a seat. “Well, Mr. Lee,” he said, addressing the young Marine officer on his left. “It looks like you and your people might get a chance to prove your usefulness, even in this day and age.”

“Is there any more data on the Star Mountain’s vector, sir?” He sounded eager…and painfully young.

“Nothing new. They’re still vectored for Jupiter—which means Europa—and they’re boosting at 2 Gs, which means they’re in a damned hurry to get there. They won’t be able to sidestep us, however.”

“Peaceforcers save Earth, once again!” Lieutenant Commander Carvelle, the chief communications officer, said, raising a glass in salute.

Peaceforce. It was a new concept, born of one particular horror of the UN War. A French attempt to smash the U.S. will to continue the fight by diverting a small asteroid into an impact on Colorado had been stopped…almost completely. A fair-sized and somewhat radioactive piece of the UN ship that had done the diverting had come down over Lake Michigan and obliterated most of lakeside Chicago.

With the rapid expansion of human activity into the Solar System, the Confederation of World States, struggling to knock together some form of planet-wide government to replace the disintegrating UN, had recognized the danger posed by any world power able to put a spacecraft into the asteroid belt or beyond. A relatively small nudge could put a likely megaton chunk of iron or ice into a new orbit, one that could take out anything from a city to the entire human race, depending on how ambitious the bad guys were.

The threat had resulted in the Peaceforce, a military space force drawn from the United States Navy, the Marines, and the space assets of several allies tasked with patrolling the outer system and preventing just such attempts. The problem was that the Solar System was an awfully big backyard, too vast by far to allow any kind of systematic patrolling.

And the trick was to position just a few ships in strategic orbits, far, far up the side of the Solar gravity well. Orbiting in the Asteroid Belt, 4.2 a.u.s out, and employing extremely powerful sensing and tracking gear, a ship could watch for any launches from Earth. Any boosts not cleared by CWS inspection teams could be intercepted by ships such as the Kennedy and either disabled at a distance, or boarded.

That was why Lieutenant Lee was on board with his platoon of twenty-eight space-trained Marines. The JFK would match course and speed with the hostile, disable her if necessary, then close and grapple for the final round. Mitchell was amused that modern tactical thinking was actually looking at the possibility of using Marines to take an enemy ship by storm, something that hadn’t happened since the boarding of the Mayaguez in 1975.

“Well, it’ll be interesting to see Lieutenant Lee here swing across from the yardarms, cutlass and boarding pistol in hand!”

“I’d need more than two hands for that evolution, sir,” the lieutenant replied. “I think we’ll stick to M580s, and hope the bad guys aren’t in the mood for much of a fight when we get there.”

“Doesn’t sound like the fire-eating Marines I know,” Varley said.

“Hey, if it can be done without a firefight…”

“Do you anticipate problems with your mission, Lieutenant?”

“A good officer always anticipates problems, sir. Boarding a hostile spacecraft is at least as hairy as a houseclearing operation—and it’s complicated by being in zero gravity and the possibility of explosive decompression.” He grinned. “Playing with weapons inside a thin-skinned spacecraft isn’t exactly a real bright idea.”

“I imagine the whole question is academic,” Varley said with a shrug. “The Chinese can’t beat the laws of physics. Even accelerating at 2 Gs, they can’t outrun us because we have the metaphorical high ground in the Solar System. They can’t maneuver and accelerate both. When we close and match velocity, they’ll have to surrender…or risk a mass driver round through their drive unit.”

“They must have something in mind,” Lieutenant Zynkowovec said. He was the ship’s third engineering officer. “They know we’re out here, and they know physics as well as we do. They’ve gotta have something up their sleeves.”

“They just don’t know about our secret weapon!” Varley said, laughing. “The U.S. Marines!”

The radio clipped to Mitchell’s collar chirped. Damn. Always when he was sitting down to dinner. “What is it?”

“We are tracking an incoming object, Captain,” the voice of Jackie, the JFK’s AI, said in unhurried tones. “There is a threat to the ship.”

He was already on his feet and jogging for the access corridor that would take him to the ship’s hub, then forward to the bridge. “What threat?”

“The object is small—less than ten kilograms’ mass—but it is on an approach vector with a velocity of five hundred kilometers per second. Range, 15,000 kilometers, closing.”

The calm words chilled. Thirty seconds to impact.

“Why the hell didn’t we see it on radar?”

“The object is quite small, less than three meters long, and appears to exhibit stealth characteristics. Its radar cross-section is less than two centimeters across.”

A stealth missile? They still should have picked up the IR footprint of its exhaust!

“The object has just executed a minor course change,” Jackie continued. “It was unpowered until now. Definitely now on an intercept course…and accelerating.”

“Maneuver!” Mitchell bellowed. If the incoming was changing course…

He was in the access tube now, hand-over-handing rapidly into lower and lower gravity as he raced for the hub. But he knew there wasn’t time to reach the bridge.

He felt the thump, the surge of weight sideways, as the Kennedy’s maneuvering thrusters fired.

Seconds later, something struck the ship. Jeremy Mitchell was slammed against one side of the access tunnel by a savage, sudden acceleration. It felt as though the ship was tumbling, pressing him against the wall of the access tube with centrifugal force.

He heard metal shrieking protest—a screech, followed by a succession of loud pops and bangs, and the shrill whistle of air escaping to vacuum.

Then the entire universe seemed to explode in raw noise rapidly dwindled to vacuum-muffled silence, and the Kennedy’s captain found himself pinwheeling through black and cold and fragment-filled space, dying in a cloud of fast-freezing blood even as he tried to grasp the enormity of what was happening to his ship…and him.

U.S.S. John F. Kennedy

Solar orbit, 4.2 a.u. from Earth

2007 hours Zulu

Two force packages had been accelerated at the Kennedy—or rather, at that area of space the Kennedy would orbit through precisely nineteen days after the Heavenly Lightning fired them. The first, detected at the last possible moment, executed a course change for intercept and almost missed. Kennedy’s sudden maneuver—firing forward thrusters to reduce her orbital velocity—almost caused the Chinese missile to pass across her bows.

But a second course change countered the Kennedy’s move, and the force package struck far forward, ripping through the thin metal shell of the Peaceforcer cruiser’s forward reaction mass tank. The electromagnetic bottle anchoring a pea-sized fragment of antimatter in the hard vacuum of the package’s warhead failed, the antimatter slammed into metal and water, and then a fireball as hot as the surface of the sun blossomed into deadly radiance.

Water flashed into steam and exploded into space. The cruiser, almost 200 meters long, was whip-snapped by the detonation into a sudden and violent spin, tumbling end over end. Two of the hab modules, their coupling and spin mechanisms overstressed by the sudden off-balance acceleration, wrenched partly free, then broke away entirely, hurtling into the night with hundreds of smaller fragments as the great vessel began to tear itself apart.

The second package, homing on the heat and radiation of the first explosion, had more time to correct its intercept vector, and slammed into the Kennedy’s wreckage amidships. The explosion engulfed half the ship, and left only spinning fragments behind.

At its present position, the twin bursts of radiation marking the Kennedy’s destruction would take twenty minutes to reach Jupiter—and twenty-eight to make it across the void to Earth.

12 OCTOBER 2067

In Europa orbit

2007 hours (Zulu)

“Thirty seconds to release,” the voice of the Roosevelt’s skipper, Captain Galtmann, said in Jeff’s ear. “How’re you boys and girls making out over there?”

“Squared away, sir,” Jeff replied. “Ready for drop.” He tried to force some semblance of discipline on his unpleasantly twisting stomach. He hated zero G.

“Happy landings, then. We’ll see you again in six months!”

“Remember the surface radiation,” Colonel Norden’s voice added, rasping. “Get your people under cover stat, until we can give those suits a full checkout in field conditions.”

“Aye, aye, sir,” Jeff replied. “We’ll set a new speed record for cross-country ice-jogging.” Although, damn it, if the suits didn’t work, none of them would live long enough to even reach shelter. The surface of Europa, despite the cold, was hot….

“Keep me posted up here. I’ll be down in two orbits—say, 180 minutes.”

“Roger that. We’ll be waiting, sir.”

Jeff craned his head, trying to see out the tiny porthole beside his seat and get a glimpse of the Roosevelt. His suit, with its cumbersome helmet, and the fact that he was strapped down in the narrow, hard-backed seat, kept him from seeing much of anything. All that was visible through the port was the dead-black of space, and a few scattered stars, plus a little bit of the bug’s framework embracing the pressurized passenger module.

The bug was similar to lobbers and other short-haul transports used by the Marines during various Lunar operations. Intended solely for operation in vacuum, it was completely unstreamlined—a chunky, squared-off bottle shape housing command deck and passenger/cargo spaces, plus spherical fuel tanks and a chemical rocket engine all crammed together inside a webwork of titanium/carbon fiber struts, with six landing legs, powerful external spotlights, and small maneuvering thrusters on flanks and belly. It was an ungainly-looking vehicle, well deserving of the Marines’ pet name for them: bugs. Each was thirty-three meters long, with space aboard—with some creative cramming—for one platoon, in this case the forty-one men and women of Second Platoon, Bravo Company, plus six of the Navy SEALs with the DSV team.

The Roosey carried two bugs, plus four similar craft used strictly for transporting cargo. The Ops Plan called for using both bugs to ferry all of Bravo—eighty-one Marines and six SEALs—to the CWS Cadmus Research Station on Europa. They would then refuel and rendezvous with the Roosey to take aboard the headquarters and support platoons in the next run, and finally return a third time for Charlie Company. The cargo landers would be shuttling back and forth between the surface and orbit for the next two days, bringing down not only the four Manta submersibles and all of the Marines’ supplies, but a load of consumables for Cadmus Station as well.

Cadmus Station consisted of twenty-five men and women from six nations. Most had been on Europa since the station had been established over a year before, and they were totally dependent on occasional ships from Earth for food and spare parts.

Water, at least, they had plenty of. Europa’s surface was a sheath of solid water ice, enclosing an ocean fifty to one hundred kilometers deep—five to ten times deeper than the deepest ocean abyss on Earth.

“Eight seconds to release,” Lieutenant Walthers said from the bug’s command deck. “Hang onto your lunches back there! And three…and two…and one…release!”

There was a slight jar as the mechanical grapples connecting the bug to the Roosey’s spine swung open, and a half-second burst from the dorsal thrusters set them in motion. The admonition to the Marines to retain their lunches seemed uncalled for…until the thrusters fired again and the bug rolled sharply to port.

Through his narrow window view on the starboard side, Jeff saw the Roosevelt swing ponderously into view, all light and midnight-dark, a long, slender rail with bulbous water tanks attached along her entire length, her habs like four sledgehammers attached at the handles still slowly rotating just aft of the forward tank. During acceleration, the rotation was halted and the habs folded back against the ship’s spine, preserving the up-down conventions of each deck. Once the Roosevelt had entered orbit around Europa, however, the habs had redeployed while the bugs were made ready for the descent. Heat radiators spread astern like enormous, squared-off tailfeathers. Getting rid of excess heat in vacuum was always a major spacecraft design problem, and the antimatter reaction of the drive created a lot of excess heat.

Those last twelve hours that the drive had been running, with the Marines on board stewing in their own overheated juices, had been a nightmare.

The bug continued its roll, dragging the Roosevelt out of Jeff’s line of sight. He was hoping for a glimpse of Jupiter, but the next thing he saw was a vast arc of darkness swallowing the stars one by one. The lights illuminating the bug’s passenger deck were dim and amber, but still bright enough that he couldn’t see any detail in the night outside the craft. They were falling over Europa’s night side.

He’d seen Europa during their final approach, as well as during training sims, of course. The moon looked like nothing so much as a straw-colored marble heavily crisscrossed by long, straight lines of a deeper, reddish color.

The bug’s main engines fired their deorbit burn, and Jeff’s stomach lurched at the sudden resumption of acceleration, a huge hand clamping down across his chest. Then, just as suddenly, the hand was gone and he was weightless again.

But the Roosevelt was falling away above and ahead, continuing to orbit the moon while the bug descended rapidly toward the surface, following a long, descending curve that would take them halfway around the moon. He thought he could make out something of the Europan surface now, irregular patches less black than their surroundings, glossy smooth areas, perhaps, illuminated by starlight. Then, quite suddenly, black gave way to darkest gray, lightening swiftly as the far horizon, still curved, took fire from the fast-rising Sun.

The bug swept across the terminator, passing from night into day. Jeff blinked, then adjusted his helmet’s polarization. The surface now was ice, reflecting sun-dazzle in brilliant white patches interspersed with tan and ocher-colored regions. Jeff stared at the surface turning below, fascinated, no matter how many times he’d seen computer simulations and vids already. The surface looked remarkably like old, early twentieth-century notions of the planet Mars, complete with long, straight canals, called lineae. A kind of plate tectonics worked here; Europa’s core, molten from tidal flexing in the tug-of-war between Jupiter and the other major Jovian satellites, kept Europa’s ocean liquid. The upper few kilometers of that ocean, however, were frozen. As the tides continued to stretch the tiny world, the icecap cracked, refroze, and cracked again, until it looked like a frosted crystal ball with a surface crazed by thousands of straight-line cracks and fissures. There were almost no craters that he could see. Here and there, however, he could make out large, circular features, the maculae, which looked like spots on an iced-over pond in early spring where someone had chucked a rock through, and the resulting hole had been closed over by thin skim ice. And that, as a matter of cold fact, was almost certainly a precise analogy. Traditional craters couldn’t last on that landscape of constantly resculpted ice and intense radiation bombardment for more than a few hundred thousand years, if that. Once in a while, though, a rock big enough to leave a lasting impression must impact with the surface and leave its footprint, even if for only a short time as planets and moons measured such things.

The icy surface was remarkably flat. No mountains. No cliffs. This close, he could see that the major, straight cracks were supplemented by myriad smaller ones, until the reddish lines resembled a cascade of long, red hair matted across the moon’s pale surface.

The image of red hair made him think of Carsyn, back in California. That homesick thought jarred, superimposed as it was on the alien majesty below. He’d been thinking about her a lot during the voyage out from Earth.

He’d promised to give her an answer when he returned, at the end of this deployment. Yeah…six months on this ice box ought to give him the time he needed to make a decision like that.

The bug’s engines fired again, a savage, bucking kick through the hard seat upright at his back. The curve of the horizon was definitely flatter now. It was impossible to estimate their altitude by eye, however. The landscape below was simply too alien, too far beyond common human experience and lacking in any recognizable features, for him to make even a guess. In places, the terrain was jumbled and broken; elsewhere it was absolutely flat. They could have been ten kilometers up, or looking at a snow field from an altitude of two meters.

On closer inspection, the linea turned out to be less like the canals of Percival Lowell’s Mars than they were arctic pressure ridges. Those dark-colored lines were in fact elevations in the landscape, rising a hundred meters or so above the surrounding terrain. The dark color was partly the effect of sunlight reflecting from slopes instead of flats, but also seemed to be the result of coloring of some sort contaminating the ice. Current theory held that as separate plates of the Europan ice cap ground together or cracked apart, water upwelled from beneath, bringing with it a concentrated soup of organic molecules that were frozen in the slow-rising pressure ridges. Europa’s global sea was rich in sulfur, iron, and iron-sulfur compounds; the life forms discovered there so far metabolized sulfur, analogues of the deep-ocean life discovered over eighty years before around some of Earth’s sea-bottom volcanic vents.

Before much longer, it became apparent that Europa’s billiard-ball flatness was largely an illusion. There were vast, smooth-ice plains, but most of the surface was chaotic, a blind jumble of blocks and chunks and fragments repeatedly fragmented, mashed together, refrozen, then broken again. The surface, Jeff thought, looked like an endless sea of icebergs packed together into a solid mass. His Marine training looked at the tangle sweeping past below, and decided that combat in that labyrinthine tangle would be…a challenge.

In Marine OCS, at Quantico, Jeff had repeatedly faced impossible problems, everything from doing the required number of chins and push-ups to making it up a sheer, wooden obstacle-course barrier ten meters tall to figuring out a particularly knotty problem in close-combat tactics. His senior DI, a gunnery sergeant named Matlock, had had the habit of leaning over and screaming in Jeff’s ear, “It’s a challenge, Marine! Think of it as a challenge!”

Yeah…right.

“Okay, boys and girls,” Lieutenant Walthers’s voice said in his helmet. “We have the CWS beacon. On final.”

Jeff turned, as best as he could bundled in his heavy suit, and looked at the motionless rows of other suited-up Marines, waiting. Without their weapons, they looked less like Marines than passengers strapped in aboard a suborbital HST flight. Their gear was stowed aft, however; the bug’s cabin was far too cramped to accommodate this many space-suited men and women and their weapons. No matter. This was neither training nor a live drop into a hot LZ. More like a commercial flight into a new duty station Earthside.

Hell, yeah, just like Lompoc, California, he thought, grinning to himself behind his dark visor. No unpleasant neighbors to worry about. Just think of it as a new shore station in California…with no air, malls, tattoo parlors, traffic, or girlie shows, with high radiation, no palm trees, and a summertime high of minus one-forty.

He looked back out the port. The bug had swung to the right, and he could see the base, now, spread out beneath a midmorning sun. There was actually very little to see, but the handful of surface structures was enough to bring a feeling of scale to the otherwise scaleless terrain…though they could have been toys left scattered across a flat layer of snow in someone’s winter-bound backyard.

The CWS research station was located on the Cadmus Linea, one of the bolder of the red-hued cracks following a great circle route halfway across the moon’s circumference. This close, you couldn’t really see the concentration of red pigments so visible from space; the surface was simply ice, a bit darker-hued, perhaps, than fresh, new ice, but still colored a dull white with a bluish cast and occasional, brighter highlights.

The facility had been built in the middle of a circular depression—the shadow of a small, ancient macula, perhaps—but the floor was Kansas-cornfield flat. The visible components of the station consisted of a dark-gray landing pad the size of a football field marked with an enormous red crosshair, a twenty-meter radio mast, a satellite dish, two storage sheds, and a scattering of equipment—bulldozers, surface crawlers, and several hoppers parked at the edge of the landing field. Nearby, a couple of hundred meters, perhaps, from the edge of the field, was a black circle, as precise and as artificial as the mouth of a tunnel, leading straight down through the ice, covered over by a billowing cloud of fog.

The Pit.

A single white building, almost invisible against the ice, clung to the artificially sheer side of the circular hole into the moon’s interior. Most of the station was safely buried, out of reach of the invisible but deadly sea of radiation bathing the moon’s nakedly exposed surface.

The bug turned again, Jeff felt a series of heavy thumps transmitted through the deck, and then they were gentling toward the red crosshairs. In another moment, he couldn’t see any of the base, but he did catch a glimpse of the bug’s sharp-edged shadow racing across the gray-white surface to meet them as they drifted lower. A cloud of ice crystals swirled briefly past the porthole, and then they were down.

“Thank you, ladies and gentlemen, for flying Air Navy,” Walthers’s voice said. “The weather here in Miami Beach is clear and sunny, wind zero out of the southeast, and the temperature is a balmy minus one forty-six Celsius. Please be sure not to leave personal gear adrift, and watch your step exiting the spacecraft. The bleach puddles can be treacherous!”

A chorus of groans, curses, and catcalls answered the bug pilot’s cheerfully humorous litany. Jeff unstrapped, then stood, crouched over with one gloved hand bracing himself against the low overhead, as Kaminski began calling off names.

“Cukela! Brighton! Jellowski! Hutton! Vottori! Garcia! You’re up!”

Six by six, the platoon began leaving their seats and filing in a slow shuffle aft, between the rows of seats. The central passageway fed onto a ramp leading down into the bug’s cramped main lock. That compartment was only large enough for six suited-up Marines at a time, so the disembarkation process took some time.

Jeff waited through the slow cycling of the lock, exiting with Kaminski and the last three men of the platoon. By ancient tradition, the senior officer was the last one onto a boat, and the first one off…but such quaint niceties didn’t apply here, when Jeff wanted to be able to personally give the suits of each of his people a once-over eyeballing as the Marines shuffled past.

The suits were essentially Mark IICs, later models of the armor that Marines had worn on Mars and the moon a quarter of a century before. These were a bit bulkier, with thicker armor laminates, better on-board computers and life support, and, instead of the old chameleon surfaces which adjusted the color to match the surroundings, these were covered with a thick and heavy but flexible material, like white canvas. The intent was not camouflage, however. The “canvas” material was actually a weave of superconducting fibers and microscopic tubes. A weak electrical current flowing through the covering should serve to trap and deflect incoming particulate radiation, specifically the flood of protons sleeting into Europa’s surface from Jupiter’s intense radiation belts.

Even so, each man’s exposure on the surface would be carefully monitored for the next six months. Doc McCall, the company corpsman, had already passed out badges that would record cumulative totals for each man and woman and alert Jeff’s secretary if they picked up a dosage of 30 rems or more.

He and Kaminski gave one another a visual suit check, and then they locked out with the last three Marines in the queue.

When the outer lock hatchway cycled open, Jeff stepped down into a cold and eerie silence. His suit heaters were working fine—he felt them kick on in his legs when his boots touched the landing pad deck—but the surroundings looked as cold and bleak as a deep Siberian winter.

Of course, the actual temperature was far lower than anything Earth had ever experienced.

The horizon was the rim of the crater chosen as the site of the base, knife-edged and brilliant in the sun. The sky was a dull, dead black, the stars washed away by the brilliance of a shrunken sun just above the ridge line. And above, higher in the sky…

Jupiter hung above the sun, an immense crescent bowed away from the light, embracing a bloated disk of night. The crescent spanned over twelve degrees of the sky—twenty-four times the diameter of Earth’s Moon back home. For a dizzying moment, Jeff wrestled with the sensation that the planet was falling on him…and then he took a deep breath and mentally nailed it in the sky. He could easily make out the banding on the crescent from here, turbulent stripes of ocher, red, white, and tan, a spectacle of unparalleled beauty too rich, too intense to look real. If he thought of it as a photographic backdrop, or as an extremely detailed vid or sim, he could push back the almost claustrophobic feeling that the planet was about to drop from the sky and crush him.

He dragged his gaze down from the sky and fixed it on Kaminski’s back. Together, they trudged across the landing deck. The rest of the company was filing along a path leading toward the building at the edge of The Pit; someone in a suit identical to Jeff’s save for bright blue identifying bands on upper arms and legs stood at the edge of the deck, waving them on.

“Major Warhurst?” a man’s voice asked.

He raised his own gloved hand to show who was speaking. “I’m Warhurst, sir. Bravo Company, and XO of the Expeditionary Force.”

“Dr. Shigeru Ishiwara. Konichiwa! Welcome to Cadmus Station!”

“Good to be here, sir.” If it was a lie, it was a well-intentioned one.

“Let’s get you and all of your men below,” Ishiwara said. “You’re not wearing your long-term pliss units.”

Each suit had a PLSS, a Personal Life Support System built into the back, housing most of the suit’s power generating and heating systems, as well as reserves of air and water. The crowding aboard the bug had necessitated using PLSS Type Ones, which provided two to three hours of life support, depending on the amount of exertion. Ishiwara was wearing a Type Three, so bulky it looked like it was wearing him, a molded white box with irregular angles grasping him from behind. With that unit, he could survive on the Europan surface for as much as twenty-four hours, assuming he didn’t pick up too many rems in the process and fry.

“Our life support is fine,” Jeff replied. “It’ll be nice to get out of the wind, though.”

“Meaning the plasma of Jupiter’s magnetosphere,” Ishiwara said, laughing. “I understand. If you’ll follow me?”

Steps led down of the edge of the landing deck, taking them to a well-worn path through the ice bordered by a slender handrail. Here and there he could see what looked like puddles of clear meltwater on the ice, and, when he looked closely, it seemed to him that some of the puddles were fizzing slightly around the edges of the pools, as ice continued to melt.

“Please watch your step, gentlemen,” Ishiwara warned, pointing to one of the puddles. “Those pools can be very slick. The bombardment of protons from Jupiter’s magnetosphere is constantly breaking down the surface ice and forming new compounds, especially hydrogen peroxide. The pools then dissociate into oxygen and hydrogen, which escape—but the melting process leaves things slippery.”

“We’ve been briefed,” Jeff replied. Even so, his first few steps along the path were a bit unsteady, and on the fifth step he felt his heavy right boot slide forward alarmingly. Reaching out, he grasped the handrail beside the path. There was no sense in proving he was some kind of macho Marine who didn’t need handrails, not when the alternative was an undignified fall on his ass. Up ahead, he saw several Marines helping a comrade to his feet; yeah, they were learning about dignity the hard way.

Ahead, several space-suited men were carrying large crates toward one of a number of sheds dotting the crater floor. “You store equipment on the surface?” Jeff asked.

“Some,” Ishiwara replied. “Especially the things that explode, like seismic penetrators. We use them to send shock waves through the ice to determine its thickness, and also, sometimes, to cut holes. We’d rather not have those going off inside the E-DARES facility.

“Those sheds, though,” he added, indicating the Quonset hut storage structures, “are for the honey buckets.”

“Shit.”

“Exactly. Europa has its own biosystem, and we must avoid contaminating it at all costs. Similar restrictions are used in our explorations of Antarctica, you know. Human wastes are dehydrated, sealed inside plastic bags, then allowed to freeze solid on the surface. After a year here, we’ve accumulated quite a bit of the stuff—nearly ten tons. We’ll need to take it with us when we leave.”

“That ship’ll have the damnedest cargo manifest I’ve ever heard of. But wouldn’t the cold and radiation sterilize the stuff?”