Jamieson had no such consolation. He saw little of the battle, but felt its terror and grandeur far more deeply than his friend. It was too late for regrets, but over and over again he wrestled with his conscience. He felt angry at fate for having placed him in such a position that his action might have decided the destiny of worlds. He was angry, in equal measure, with Earth and the Federation for having let matters come to this. And he was sick at heart as he thought of the future toward which the human race might now be heading.
Wheeler never knew why the fortress waited so long before it used its main weapon. Perhaps Steffanson—or whoever was in charge—was waiting for the attack to slacken so that he could risk lowering the defences of the dome for the millisecond that he needed to launch his stiletto.
Wheeler saw it strike upward, a solid bar of light stabbing at the stars. He remembered the rumours that had gone round the Observatory. So this was what had been seen, flashing above the mountains. He did not have time to reflect on the staggering violation of the laws of optics which this phenomenon implied, for he was staring at the ruined ship above his head. The beam had gone through the Lethe as if she did not exist; the fortress had speared her as an entomologist pierces a butterfly with a pin.
Whatever one's loyalties, it was a terrible thing to see how the screens of that great ship suddenly vanished as her generators died, leaving her helpless and unprotected in the sky. The secondary weapons of the fort were at her instantly, tearing Out great gashes of metal and boiling away her armour layer by layer. Then, quite slowly, she began to settle toward the Moon, still on an even keel. No one will ever know what stopped her: probably some short-circuit in her controls, since none of her crew could have been left alive. For suddenly she went off to the east in a long, flat trajectory. By that time most of her hull had been boiled away and the skeleton of her framework was almost completely exposed. The crash came, minutes later, as she plunged out of sight beyond the Teneriffe Mountains. A blue-white aurora flickered for a moment below the horizon, and Wheeler waited for the shock to reach him.
And then, as he stared into the east, he saw a line of dust rising from the plain, sweeping toward him as if driven by a mighty wind. The concussion was racing through the rock, hurling the surface dust high into the sky as it passed. The swift, inexorable approach of that silently moving wall, advancing at the rate of several kilometres a second, was enough to strike terror into anyone who did not know its cause. But it was quite harmless; when the wave-front reached him, it was as if a minor earthquake had passed. The veil of dust reduced visibility to Zero for a few seconds, then subsided as swiftly as it had come.
When Wheeler looked again for the remaining ships, they were so far away that their screens had shrunk to little balls of fire against the zenith. At first he thought they were retreating; then, abruptly, the screens began to expand as they came down into the attack under a terrific vertical acceleration. Over by the fortress the lava, like some tortured living creature, was throwing itself madly into the sky as the beams tore into it.
The Acheron and Eridanus came out of their dives about a kilometre above the fort. For an instant, they were motionless; then they went back into the sky together. But the Eridanus had been mortally wounded, though Wheeler knew only that one of the screens was shrinking much more slowly than the other. With a feeling of helpless fascination, he watched the stricken ship fall back toward the Moon. He wondered if the fort would use its enigmatic weapon again, or whether the defenders realized that it was unnecessary.
About ten kilometres up, the screens of the Eridanus seemed to explode and she hung unprotected, a blunt torpedo of black metal, almost invisible against the sky. Instantly her light-absorbing paint, and the armour beneath, were torn off by the beams of the fortress. The great ship turned cherry-red, then white. She swung over so that her prow turned toward the Moon, and began her last dive. At first it seemed to Wheeler that she was heading straight toward him; then he saw that she was aimed at the fort. She was obeying her captain's last command.
It was almost a direct hit. The dying ship smashed into the lake of lava and exploded instantly, engulfing the fortress in an expanding hemisphere of flame. This, thought Wheeler, must surely be the end. He waited for the shock wave to reach him, and again watched the wall of dust sweep by—this time into the north. The concussion was so violent that it jerked him off his feet, and he did not see how anyone in the fort could have survived. Cautiously, he put down the mirror which had given him almost all his view of the battle, and peered over the edge of his trench. He did not know that the final paroxysm was yet to come.
Incredibly, the dome was still there, though now it seemed that part of it had been sheared away. And it was inert and lifeless: its screens were down, its energies exhausted—its garrison, surely, already dead. If so, they had done their work. Of the remaining Federal ship, there was no sign. She was already retreating toward Mars, her main armament completely useless and her drive units on the point of failure. She would never fight again—yet in the few hours of life that were left to her, she had one more role to play.
"It's all over, Sid," Wheeler called into his suit radio. "It's safe to come and look now."
Jamieson climbed up out of a crack fifty meters away, holding the radiation detector in front of him.
"It's still hot around here," Wheeler heard him grumble, half to himself. "The sooner we get moving the better."
"Will it be safe to go back to Ferdinand and put through a radio—?" began Wheeler. Then he stopped. Something was happening over by the dome.
In a blast like an erupting volcano, the ground tore apart. An enormous geyser began to soar into the sky, hurling great boulders thousands of meters toward the stars. It climbed swiftly above the plain, driving a thunderhead of smoke and spray before it. For a moment it towered against the southern sky, like some incredible, heaven-aspiring tree that had sprung from the barren soil of the Moon. Then, almost as swiftly as it had grown, it subsided in silent ruin and its angry vapours dispersed into space.
The thousands of tons of heavy liquid holding open the deepest shaft that man had ever bored had finally come to the boiling point, as the energies of the battle seeped into the rock. The mine had blown its top as spectacularly as any oil well on Earth, and had proved that an excellent explosion could still be arranged without the aid of atomic energy.
Eighteen
To the Observatory, the battle was no more than an occasional distant earthquake, a faint vibration of the ground which disturbed some of the more delicate instruments but did no material damage. The psychological damage, however, was a different matter. Nothing is so demoralizing as to know that great and shattering events are taking place, but to be totally unaware of their outcome. The Observatory was full of wild rumours, the Signals Office besieged with inquiries. But even here there was no information. All news broadcasts from Earth had ceased; the whole world was waiting, as if with bated breath, for the fury of the battle to die away so that the victor could be known. That there would be no victor was the one thing that had not been anticipated.
Not until long after the last vibrations had died away and the radio had announced that the Federation forces were in full retreat did Maclaurin permit anyone to go up to the surface. The report that came down was, after the strain and excitement of the last few hours, not only a relief but a considerable anticlimax. There was a small amount of increased radioactivity about, but not the slightest trace of damage. What it would be like on the other side of the mountains was, of course, a different matter.
The news that Wheeler and Jamieson were safe gave a tremendous boost to the staff's morale. Owing to a partial breakdown of communications, it had taken them almost an hour to contact Earth and to get connected to the Observatory. The delay had been both infuriating and worrying, for it had left them wondering if the Observatory had been destroyed. They dared not set out on foot until they were sure they had somewhere to go—and Ferdinand was now too radioactive t
o be a safe refuge.
Sadler was in Communications trying to find out what was happening, when the message came through. Jamieson, sounding very tired, gave a brief report of the battle and asked for instructions.
"What's the radiation reading inside the cab?" Maclaurin asked. Jamieson called back the figures: it still seemed strange to Sadler that the message should have to go all the way to Earth just to span a hundred kilometres of the Moon, and he was never able to get used to the three-second delay that this implied.
"I'll get the health section to work out the tolerance," Maclaurin answered. "You say it's only a quarter of that reading out in the open?"
"Yes—we've stayed outside the tractor as much as possible, and have come in every ten minutes to try and contact you."
"The best plan is this—we'll send a Caterpillar right away, and you start walking toward us. Any particular rendezvous you'd like to aim for?"
Jamieson thought for a moment.
"Tell your driver to head for the five-kilometre marker on this side of Prospect; we'll reach it about the same time as he does. We'll keep our suit radios on so there'll be no chance of him missing us."
As Maclaurin was giving his orders, Sadler asked if there was room for an extra passenger in the rescue tractor. It would give him a chance of questioning Wheeler and Jamieson much sooner than would otherwise be the case. When they reached the Observatory—though they did not know it yet—they would be whipped into hospital at once and treated for radiation sickness. They were in no serious danger, but Sadler doubted that he would have much chance of seeing them for a while when the doctors got hold of them.
Maclaurin granted the request, adding the comment: "Of course, you realize this means that you'll have to tell them who you are. Then the whole Observatory will know inside ten minutes."
"I've thought of that," Sadler replied. "It doesn't matter now." Always assuming, he added to himself, that it ever did.
Half an hour later, he was learning the difference between travel in the smooth, swift monorail and in a jolting tractor. After a while he became used to the nightmare grades the driver was light-heartedly attacking, and ceased to regret volunteering for this mission. Besides the operating crew, the vehicle was carrying the chief medical officer, who hoped to make blood counts and give injections as soon as the rescue had been effected.
There was no dramatic climax to the expedition; as soon as they topped Prospect Pass, they made radio contact with the two men trudging toward them. Fifteen minutes later the moving figures appeared on the skyline, and there was no ceremony apart from fervent handshakes as they came aboard the tractor.
They halted for a while so that the MO could give his injections and make his tests. When he had finished he told Wheeler: "You're going to be in bed for the next week, but there's no need to worry."
"What about me?" asked Jamieson.
"You're all right—a much smaller dose. A couple of days is all you need."
"It was worth it," said Wheeler cheerfully. "I don't think that was much of a price to pay for a grandstand view of Armageddon." Then, as the reaction of knowing that he was safe wore off, he added anxiously: "What's the latest news? Has the Federation attacked anywhere else?"
"No," Sadler replied. "It hasn't, and I doubt that it can. But it seems to have achieved its main objective, which was to stop us using that mine. What will happen now is up to the politicians."
"Hey," said Jamieson, "what are you doing here, anyway?"
Sadler smiled.
"I'm still investigating, but let's say that my terms of reference are wider than anyone imagined."
"You aren't a radio reporter?" asked Wheeler suspiciously.
"Er—not exactly. I'd rather not—"
"I know," Jamieson interjected suddenly. "You're something to do with Security. It makes sense now."
Sadler looked at him with mild annoyance. Jamieson, he decided, had a remarkable talent for making things difficult.
"It doesn't matter. But I want to send in a full report of everything you saw. You realize that you are the only surviving eyewitnesses, except for the crew of the Federal ship."
"I was afraid of that," said Jamieson. "So Project Thor was wiped out?"
"Yes, but I think it did its job."
"What a waste, though—Steffanson and all those others! If it hadn't been for me, he'd probably still be alive."
"He knew what he was doing—and he made his own choice," replied Sadler, rather curtly. Yes, Jamieson was going to be a most recalcitrant hero.
For the next thirty minutes, as they were climbing back over the wall of Plato on the homeward run, he questioned Wheeler about the course of the battle. Although the astronomer could only have seen a small part of the engagement, owing to his limited angle of view, his information would be invaluable when the tacticians back on Earth carried out their postmortem.
"What puzzles me most of all," Wheeler concluded, "is the weapon the fort used to destroy the battleship. It looked like a beam of some kind, but of course that's impossible. No beam can be visible in a vacuum. And I wonder why they only used it once? Do you know anything about it?"
"I'm afraid not," replied Sadler, which was quite untrue. He still knew very little about the weapons in the fort, but this was the only one he now fully understood. He could well appreciate why a jet of molten metal, hurled through space at several hundred kilometres a second by the most powerful electro-magnets ever built, might have looked like a beam of light flashing on for an instant. And he knew that it was a short-range weapon, designed to pierce the fields which would deflect ordinary projectiles. It could be used only under ideal conditions, and it took many minutes to recharge the gigantic condensers which powered the magnets.
This was a mystery the astronomers would have to solve for themselves. He did not imagine that it would take them very long, when they really turned their minds to the subject.
The tractor came crawling cautiously down the steep inner slopes of the great walled-plain, and the latticework of the telescopes appeared on the horizon. They looked, Sadler thought, exactly like a couple of factory chimneys surrounded by scaffolding. Even in his short stay here, he had grown quite fond of them and had come to think of them as personalities, just as did the men who used them. He could share the astronomer's concern that any harm might befall these superb instruments, which had brought knowledge back to Earth from a hundred thousand million light-years away in space.
A towering cliff cut them off from the sun, and darkness fell abruptly as they rolled into shadow. Overhead, the stars began to reappear as Sadler's eyes automatically adjusted for the change in light. He stared up into the northern sky, and saw that Wheeler was doing the same.
Nova Draconis was still among the brightest stars in the sky, but it was fading fast. In a few days, it would be no more brilliant than Sirius; in a few months, it would be beyond the grasp of the unaided eye. There was, surely, some message here, some symbol half glimpsed on the frontiers of imagination. Science would learn much from N. Draconis, but what would it teach the ordinary world of men?
Only this, thought Sadler. The heavens might blaze with portents, the galaxy might burn with the beacon lights of detonating stars, but man would go about his own affairs with a sublime indifference. He was busy with the planets now, and the stars would have to wait. He would not be overawed by anything that they could do; and in his own good time, he would deal with them as he considered fit.
Neither rescued nor rescuers had much to say on the last lap of the homeward journey. Wheeler was obviously beginning to suffer from delayed shock, and his hands had developed a nervous tremble. Jamieson merely sat and watched the Observatory approaching, as if he had never seen it before. When they drove through the long shadow of the thousand-centimetre telescope, he turned to Sadler and asked: "Did they get everything under cover in time?"
"I believe so," Sadler replied. "I've not heard of any damage."
Jamieson nodded absent-mindedly. He s
howed no sign of pleasure or relief; he had reached emotional saturation, and nothing could really affect him now until the impact of the last few hours had worn away.
Sadler left them as soon as the tractor drove into the underground garage, and hurried to his room to write up his report. This was outside his terms of reference, but he felt glad that at least he was able to do something constructive.
There was a sense of anticlimax now—a feeling that the storm had spent its fury and would not return. In the aftermath of the battle, Sadler felt far less depressed than he had for days. It seemed to him that both Earth and the Federation must be equally overawed by the forces they had released, and both equally anxious for peace.
For the first time since he had left Earth, he dared to think once more of his future. Though it could still not be wholly dismissed, the danger of a raid on Earth itself now seemed remote. Jeannette was safe, and soon he might be seeing her again. At least he could tell her where he was, since events had made any further secrecy absurd.
But there was just one nagging frustration in Sadler's mind. He hated to leave a job undone, yet in the nature of things this mission of his might remain forever uncompleted. He would have given so much to have known whether or not there had been a spy in the Observatory…
Nineteen
The liner Pegasus, with three hundred passengers and a crew of sixty, was only four days out from Earth when the war began and ended. For some hours there had been a great confusion and alarm on board, as the radio messages from Earth and Federation were intercepted. Captain Halstead had been forced to take firm measures with some of the passengers, who wished to turn back rather than go on to Mars and an uncertain future as prisoners of war. It was not easy to blame them; Earth was still so close that it was a beautiful silver crescent, with the Moon a fainter and smaller echo beside it. Even from here, more than a million kilometres away, the energies that had just flamed across the face of the Moon had been clearly visible, and had done little to restore the morale of the passengers.
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