"How does it look to you?" asked Long.
Rioz shrugged. "Okay, I guess. I don"t see anything wrong."
"Doesn"t it seem to be getting larger?"
"Why should it?"
"Well, doesn"t it?" Long insisted.
Rioz and Swenson stared at it thoughtfully.
"It does look bigger," said Swenson.
"You"re just putting the notion into our minds," Rioz argued. "If it were getting bigger, it would be coming closer."
"What"s impossible about that?"
"These things are stable orbits."
"They were when we came here," said Long. "There, did you feel that?"
The ground had trembled again.
Long said, "We"ve been blasting this thing for a week now. First, twenty-five ships landed on it, which changed its momentum right there. Not much, of course. Then we"ve been melting parts of it away and our ships have been blasting in and out of it-all at one end, too. In a week, we may have changed its...o...b..t just a bit. The two fragments, this one and the Shadow, might be converging."
"It"s got plenty of room to miss us in." Rioz watched it thoughtfully. "Besides, if we can"t even tell for sure that it"s getting bigger, how quickly can it be moving? Relative to us, I mean."
"It doesn"t have to be moving quickly. Its momentum is as large as ours, so that, however gently it hits, we"ll be nudged completely out of our orbit, maybe in toward Saturn, where we don"t want to go. As a matter of fact, ice has a very low tensile strength, so that both planetoids might break up into gravel."
Swenson rose to his feet. "d.a.m.n it, if I can tell you a sh.e.l.l is moving a thousand miles away, I can tell what a mountain is doing twenty miles away." He turned toward the ship.
Long didn"t stop him.
Rioz said, "There"s a nervous guy."
The neighboring planetoid rose to zenith, pa.s.sed overhead, began sinking. Twenty minutes later, the horizon opposite that portion behind which Saturn had disappeared burst into orange flame as its bulk began lifting again.
Rioz called into his radio, "Hey, d.i.c.k, are you dead in there?"
"I"m checking," came the m.u.f.fled response.
"Is it moving?" asked Long.
"Yes."
"Toward us?"
There was a pause. Swenson"s voice was a sick one. "On the nose, Ted. Intersection of orbits will take place in three days."
"You"re crazy!" yelled Rioz.
"I checked four times," said Swenson.
Long thought blankly, What do we do now?
9.
Some of the men were having trouble with the cables. They had to be laid precisely; their geometry had to be very nearly perfect for the magnetic field to attain maximum strength. In s.p.a.ce, or even in air, it wouldn"t have mattered. The cables would have lined up automatically once the juice went on.
Here it was different. A gouge had to be plowed along the planetoid"s surface and into it the cable had to be laid. If it were not lined up within a few minutes of arc of the calculated direction, a torque would be applied to the entire planetoid, with consequent loss of energy, none of which could be spared. The gouges then had to be redriven, the cables shifted and iced into the new positions.
The men plodded wearily through the routine.
And then the word reached them: "All hands to the jets!"
Scavengers could not be said to be the type that took kindly to discipline. It was a grumbling, growling, muttering group that set about disa.s.sembling the jets of the ships that yet remained intact, carrying them to the tail end of the planetoid, grubbing them into position, and stringing the leads along the surface.
It was almost twenty-four hours before one of them looked into the sky and said, "Holy jeepers!" followed by something less printable.
His neighbor looked and said, "I"ll be d.a.m.ned!"
Once they noticed, all did. It became the most astonishing fact in the Universe.
"Look at the Shadow!"
It was spreading across the sky like an infected wound. Men looked at it, found it had doubled its size, wondered why they hadn"t noticed that sooner.
Work came to a virtual halt. They besieged Ted Long.
He said, "We can"t leave. We don"t have the fuel to see us back to Mars and we don"t have the equipment to capture another planetoid. So we"ve got to stay. Now the Shadow is creeping in on us because our blasting has thrown us out of orbit. We"ve got to change that by continuing the blasting. Since we can"t blast the front end any more without endangering the ship we"re building, let"s try another way."
They went back to work on the jets with a furious energy that received impetus every half hour when the Shadow rose again over the horizon, bigger and more menacing than before.
Long had no a.s.surance that it would work. Even if the jets would respond to the distant controls, even if the supply of water, which depended upon a storage chamber opening directly into the icy body of the planetoid, with built-in heat projectors steaming the propulsive fluid directly into the driving cells, were adequate, there was still no certainty that the body of the planetoid without a magnetic cable sheathing would hold together under the enormously disruptive stresses.
"Ready!" came the signal in Long"s receiver.
Long called, "Ready!" and depressed the contact.
The vibration grew about him. The star field in the visiplate trembled.
In the rearview, there was a distant gleaming spume of swiftly moving ice crystals.
"It"s blowing!" was the cry. It kept on blowing. Long dared not stop. For six hours, it blew, hissing, bubbling, steaming into s.p.a.ce; the body of the planetoid converted to vapor and hurled away.
The Shadow came closer until men did nothing but stare at the mountain in the sky, surpa.s.sing Saturn itself in spectacularity. Its every groove and valley was a plain scar upon its face. But when it pa.s.sed through the planetoid"s...o...b..t, it crossed more than half a mile behind its then position.
The steam jet ceased.
Long bent in his seat and covered his eyes. He hadn"t eaten in two days. He could eat now, though. Not another planetoid was close enough to interrupt them, even if it began an approach that very moment.
Back on the planetoid"s surface, Swenson said, " All the time I watched that d.a.m.ned rock coming down, I kept saying to myself, "This can"t happen. We can"t let it happen.""
"h.e.l.l," said Rioz, "we were all nervous. Did you see Jim Davis? He was green. I was a little jumpy myself."
"That"s not it. It wasn"t just-dying, you know. I was thinking-I know it"s funny, but I can"t help it-I was thinking that Dora warned me I"d get myself killed, she"ll never let me hear the last of it. Isn"t that a crummy sort of att.i.tude at a time like that?"
"Listen," said Rioz, "you wanted to get married, so you got married. Why come to me with your troubles?"
10.
The flotilla, welded into a single unit, was returning over its mighty course from Saturn to Mars. Each day it flashed over a length of s.p.a.ce it had taken nine days outward.
Ted Long had put the entire crew on emergency. With twenty-five ships embedded in the planetoid taken out of Saturn"s rings and unable to move or maneuver independently, the coordination of their power sources into unified blasts was a ticklish problem. The jarring that took place on the first day of travel nearly shook them out from under their hair.
That, at least, smoothed itself out as the velocity raced upward under the steady thrust from behind. They pa.s.sed the one-hundred-thousand-mile-an-hour mark late on the second day, and climbed steadily toward the million-mile mark and beyond.
Long"s ship, which formed the needle point of the frozen fleet, was the only one which possessed a five-way view of s.p.a.ce. It was an uncomfortable position under the circ.u.mstances. Long found himself watching tensely, imagining somehow that the stars would slowly begin to slip backward, to whizz past them, under the influence of the multi-ship"s tremendous rate of travel.
They didn"t, of course. They remained nailed to the black backdrop, their distance scorning with patient immobility any speed mere man could achieve.
The men complained bitterly after the first few days. It was not only that they were deprived of the s.p.a.ce-float. They were burdened by much more than the ordinary pseudo-gravity field of the ships, by the effects of the fierce acceleration under which they were living. Long himself was weary to death of the relentless pressure against hydraulic cushions.
They took to shutting off the jet thrusts one hour out of every four and Long fretted.
It had been just over a year that he had last seen Mars shrinking in an observation window from this ship, which had then been an independent ent.i.ty. What had happened since then? Was the colony still there?
In something like a growing panic, Long sent out radio pulses toward Mars daily, with the combined power of twenty-five ships behind it. There was no answer. He expected none. Mars and Saturn were on opposite sides of the Sun now, and until he mounted high enough above the ecliptic to get the Sun well beyond the line connecting himself and Mars, solar interference would prevent any signal from getting through.
High above the outer rim of the Asteroid Belt, they reached maximum velocity. With short spurts of power from first one side jet, then another, the huge vessel reversed itself. The composite jet in the rear began its mighty roaring once again, but now the result was deceleration.
They pa.s.sed a hundred million miles over the Sun, curving down to intersect the orbit of Mars.
A week out of Mars, answering signals were heard for the first time, fragmentary, ether-torn, and incomprehensible, but they were coming from Mars. Earth and Venus were at angles sufficiently different to leave no doubt of that.
Long relaxed. There were still humans on Mars, at any rate.
Two days out of Mars, the signal was strong and clear and Sankov was at the other end.
Sankov said, "h.e.l.lo, son. It"s three in the morning here. Seems like people have no consideration for an old man. Dragged me right out of bed."
"I"m sorry, sir."
"Don"t be. They were following orders. I"m afraid to ask, son. Anyone hurt? Maybe dead?"
"No deaths, sir. Not one."
"And-and the water? Any left?"
Long said with an effort at nonchalance, "Enough."
"In that case, get home as fast as you can. Don"t take any chances, of course."
"There"s trouble, then."
"Fair to middling. When will you come down?"
"Two days. Can you hold out that long?"
"I"ll hold out."
Forty hours later Mars had grown to a ruddy-orange ball that filled the ports and they were in the final planet-landing spiral.
"Slowly," Long said to himself, "slowly." Under these conditions, even the thin atmosphere of Mars could do dreadful damage if they moved through it too quickly.
Since they came in from well above the ecliptic, their spiral pa.s.sed from north to south. A polar cap shot whitely below them, then the much smaller one of the summer hemisphere, the large one again, the small one, at longer and longer intervals. The planet approached closer, the landscape began to show features.
"Prepare for landing!" called Long.
11.
Sankov did his best to look placid, which was difficult considering how closely the boys had shaved their return. But it had worked out well enough.
Until a few days before, he had no sure knowledge that they had survived. It seemed more likely-inevitable, almost-that they were nothing but frozen corpses somewhere in the trackless stretches from Mars to Saturn, new planetoids that had once been alive.
The Committee had been d.i.c.kering with him for weeks before the news had come. They had insisted on his signature to the paper for the sake of appearances. It would look like an agreement, voluntarily and mutually arrived at. But Sankov knew well that, given complete obstinacy on his part, they would act unilaterally and be d.a.m.ned with appearances. It seemed fairly certain that Hilder"s election was secure now and they would take the chance of arousing a reaction of sympathy for Mars.
So he dragged out the negotiations, dangling before them always the possibility of surrender.
And then he heard from Long and concluded the deal quickly.