Expedition to Earth

by Arthur C. Clarke

  The little automatic flyer was Trevindor’s sole remaining hope. He had what was left of eternity before him, and Earth was a small planet. In a few years at the most, he could have explored it all.

  So the months passed while the exile began his methodical exploration of the world, returning ever and again to his home in the desert of red sandstone.

  Everywhere he found the same picture of desolation and ruin. How long ago the seas had vanished he could not even guess, but in their dying they had left endless wastes of salt, encrusting both plains and mountains with a blanket of dirty gray.

  Trevindor felt glad that he had not been born on Earth and so had never known it in the glory of its youth. Stranger though he was, the loneliness and desolation of the world chilled his heart; had he lived here before, its sadness would have been unbearable.

  Thousands of square miles of desert passed beneath Trevindor’s fleeting ship as he searched the world from pole to pole. Only once did he find any sign that Earth had ever known civilization. In a deep valley near the equator he discovered the ruins of a small city of strange white stone and stranger architecture. The buildings were perfectly preserved, though half buried by the drifting sand, and for a moment Trevindor felt a surge of somber joy at the knowledge that man had, after all, left some traces of his handiwork on the world that had been his first home.

  The emotion was short-lived. The buildings were stranger than Trevindor had realized, for no man could ever have entered them. Their only openings were wide, horizontal slots close to the ground; there were no windows of any kind. Trevindor’s mind reeled as he tried to imagine the creatures that must have occupied them. In spite of his growing loneliness, he felt glad that the dwellers in this inhuman city had passed away so long before his time. He did not linger here, for the bitter night was almost upon him and the valley filled him with an oppression that was not entirely rational.

  And once, he actually discovered life. He was cruising over the bed of one of the lost oceans when a flash of color caught his eye. Upon a knoll which the drifting sand had not yet buried was a thin, wiry covering of grass. That was all, but the sight brought tears to his eyes.

  He grounded the machine and stepped out, treading warily lest he destroy even one of the struggling blades. Tenderly he ran his hands over the threadbare carpet which was all the life that Earth now knew. Before he left, he sprinkled the spot with as much water as he could spare. It was a futile gesture, but one which made him feel happier.

  The search was now nearly completed. Trevindor had long ago given up all hope, but his indomitable spirit still drove him on across the face of the world. He could not rest until he had proved what as yet he only feared. And thus it was that he came at last to the Master’s tomb as it lay gleaming dully in the sunlight from which it had been banished so unthinkably long.

  The Master’s mind awoke before his body. As he lay powerless, unable even to lift his eyelids, memory came flooding back. The hundred years were safely behind him. His gamble, the most desperate that any man had ever made, had succeeded! An immense weariness came over him and for a while consciousness faded once more.

  Presently the mists cleared again and he felt stronger, though still too weak to move. He lay in the darkness gathering his strength together. What sort of a world, he wondered, would he find when he stepped forth from the mountainside into the light of day? Would he be able to put his plans into—? What was that? A spasm of sheer terror shook the very foundations of his mind. Something was moving beside him, here in the tomb where nothing should be stirring but himself.

  Then, calm and clear, a thought rang through his mind and quelled in an instant the fears that had threatened to overturn it.

  “Do not be alarmed. I have come to help you. You are safe, and everything will be well.”

  The Master was too stunned to make any reply, but his subconscious must have formulated some sort of answer, for the thought came again.

  “That is good. I am Trevindor, like yourself an exile in this world. Do not move, but tell me how you came here and what is your race, for I have seen none like it.”

  And now fear and caution were creeping back into the Master’s mind. What manner of creature was this that could read his thoughts, and what was it doing in his secret sphere? Again that clear, cold thought echoed through his brain like the tolling of a bell.

  “Once more I tell you that you have nothing to fear. Why are you alarmed because I can see into your mind? Surely there is nothing strange in that.”

  “Nothing strange!” cried the Master. “Who are you—what are you, for God’s sake?”

  “A man like yourself. But your race must be primitive indeed if the reading of thoughts is foreign to you.”

  A terrible suspicion began to dawn in the Master’s brain. The answer came even before he consciously framed the question.

  “You have slept infinitely longer than a hundred years. The world you knew has ceased to be for longer than you can imagine.”

  The Master heard no more. Once again the darkness swept over him and he sank down into unconsciousness.

  In silence Trevindor stood by the couch on which the Master lay. He was filled with an elation which for the moment outweighed any disappointment he might feel. At least, he would no longer have to face the future alone. All the terror of the Earth’s loneliness, that was weighing so heavily upon his soul, had vanished in a moment. No longer alone… no longer alone!

  The Master was beginning to stir once more, and into Trevindor’s mind crept broken fragments of thought. Pictures of the world the Master had known began to form. At first Trevindor could make nothing of them; then, suddenly, the jumbled shards fell into place. A wave of horror swept over him at the appalling vista of nation battling against nation, of cities flaming to destruction. What kind of world was this? Could man have sunk so low from the peaceful age Trevindor had known? There had been legends of such things, from times incredibly remote, but man had left them with his childhood. Surely they could never have returned!

  The broken thoughts were more vivid now, and even more horrible. It was truly a nightmare age from which this other exile had come—no wonder that he had fled from it!

  Suddenly the truth began to dawn in the mind of Trevindor as, sick at heart, he watched the ghastly patterns passing through the Master’s brain. This was no exile seeking refuge from an age of horror. This was the very creator of that horror, who had embarked on the river of time with one purpose alone—to spread contagion down to later years.

  Passions that Trevindor had never imagined began to parade themselves before his eyes: ambition, the lust for power, cruelty, intolerance, hatred. He tried to close his mind, but found he had lost the power to do so. With a cry of anguish, Trevindor rushed out into the silent desert.

  It was night, and very still, for the Earth was now too weary even for winds to blow. The darkness hid everything, but Trevindor knew that it could not hide the thoughts of that other mind with which he now must share the world. Once he had been alone, and he had imagined nothing more dreadful. But now he knew that there were things more fearful even than solitude.

  The stillness of the night, and the glory of the stars that had once been his friends, brought calm to the soul of Trevindor. Slowly he turned and retraced his footsteps, walking heavily, for he was about to perform a deed that no man of his kind had ever done before.

  The Master was erect when Trevindor re-entered the sphere. Perhaps some hint of the other’s purpose dawned upon his mind, for he was very pale. Steadfastly, Trevindor forced himself to look once more into the Master’s brain. His mind recoiled at the chaos of conflicting emotions, now shot through with sickening flashes of fear. Out of the maelstrom one coherent thought came timidly quavering.

  “What are you going to do? Why do you look at me like that?”

  Trevindor made no reply, holding his mind aloof from contamination while he marshaled his resolution and all his strength.

  The tumult i
n the Master’s mind was rising to crescendo. For a moment his mounting terror brought something akin to pity to the gentle spirit of Trevindor, and his will faltered. But then there came again the picture of those ruined and burning cities.

  With all the power of his intellect, backed by thousands of centuries of mental evolution, he struck at the man before him. Into the Master’s mind, obliterating all else, flooded the single thought of—death.

  For a moment the Master stood motionless, his eyes staring wildly. His breath froze as his lungs ceased their work; in his veins the pulsing blood, which had been stilled for so long, now congealed forever.

  Without a sound, the Master toppled and lay still.

  Very slowly Trevindor turned and walked out into the night. Like a shroud the silence and loneliness of the world descended upon him. The sand, thwarted so long, began to drift through the open portals of the Master’s tomb.

  Hide and Seek

  We were walking back through the woods when Kingman saw the gray squirrel. Our bag was a small but varied one—three grouse, four rabbits (one, I am sorry to say, an infant in arms) and a couple of pigeons. And contrary to certain dark forecasts, both the dogs were still alive.

  The squirrel saw us at the same moment. It knew that it was marked for immediate execution as a result of the damage it had done to the trees on the estate, and perhaps it had lost close relatives to Kingman’s gun. In three leaps it had reached the base of the nearest tree, and vanished behind it in a flicker of gray. We saw its face once more, appearing for a moment round the edge of its shield a dozen feet from the ground; but though we waited, with guns leveled hopefully at various branches, we never saw it again.

  Kingman was very thoughtful as we walked back across the lawn to the magnificent old house. He said nothing as we handed our victims to the cook—who received them without much enthusiasm—and only emerged from his reverie when we were sitting in the smoking room and he remembered his duties as a host.

  “That tree-rat,” he said suddenly (he always called them “tree-rats,” on the grounds that people were too sentimental to shoot the dear little squirrels) “it reminded me of a very peculiar experience that happened shortly before I retired. Very shortly indeed, in fact.”

  “I thought it would,” said Carson dryly. I gave him a glare: he’d been in the Navy and had heard Kingman’s stories before, but they were still new to me.

  “Of course,” Kingman remarked, slightly nettled, “if you’d rather I didn’t…”

  “Do go on,” I said hastily. “You’ve made me curious. What connection there can possibly be between a gray squirrel and the Second Jovian War I can’t imagine.”

  Kingman seemed mollified.

  “I think I’d better change some names,” he said thoughtfully, “but I won’t alter the places. The story begins about a million kilometers sunward of Mars…”

  K.15 was a military intelligence operative. It gave him considerable pain when unimaginative people called him a spy, but at the moment he had much more substantial grounds for complaint. For some days now a fast enemy cruiser had been coming up astern, and though it was flattering to have the undivided attention of such a fine ship and so many highly trained men, it was an honor that K.15 would willingly have forgone.

  What made the situation doubly annoying was the fact that his friends would be meeting him off Mars in about twelve hours, aboard a ship quite capable of dealing with a mere cruiser—from which you will gather that K.15 was a person of some importance. Unfortunately, the most optimistic calculation showed that the pursuers would be within accurate gun range in six hours. In some six hours five minutes, therefore, K.15 was likely to occupy an extensive and still expanding volume of space.

  There might just be time for him to land on Mars, but that would be one of the worst things he could do. It would certainly annoy the aggressively neutral Martians, and the political complications would be frightful. Moreover, if his friends had to come down to the planet to rescue him, it would cost them more than ten kilometers a second in fuel—most of their operational reserve.

  He had only one advantage, and that a very dubious one. The commander of the cruiser might guess that he was heading for a rendezvous, but he would not know how close it was or how large was the ship that was coming to meet him. If he could keep alive for only twelve hours, he would be safe. The “if” was a somewhat considerable one.

  K.15 looked moodily at his charts, wondering if it was worthwhile to burn the rest of his fuel in a final dash. But a dash to where? He would be completely helpless then, and the pursuing ship might still have enough in her tanks to catch him as he flashed outward into the empty darkness, beyond all hope of rescue—passing his friends as they came sunward at a relative speed so great that they could do nothing to save him.

  With some people, the shorter the expectation of life, the more sluggish are the mental processes. They seem hypnotized by the approach of death, so resigned to their fate that they do nothing to avoid it. K.15, on the other hand, found that his mind worked better in such a desperate emergency. It began to work now as it had seldom done before.

  Commander Smith—the name will do as well as any other—of the cruiser Doradus was not unduly surprised when K.15 began to decelerate. He had half expected the spy to land on Mars, on the principle that internment was better than annihilation, but when the plotting room brought the news that the little scout ship was heading for Phobos, he felt completely baffled. The inner moon was nothing but a jumble of rock some twenty kilometers across, and not even the economical Martians had ever found any use for it. K.15 must be pretty desperate if he thought it was going to be of any greater value to him.

  The tiny scout had almost come to rest when the radar operator lost it against the mass of Phobos. During the braking maneuver, K.15 had squandered most of his lead and the Doradus was now only minutes away—though she was now beginning to decelerate lest she overrun him. The cruiser was scarcely three thousand kilometers from Phobos when she came to a complete halt: of K.15’s ship, there was still no sign. It should be easily visible in the telescopes, but it was probably on the far side of the little moon.

  It reappeared only a few minutes later, traveling under full thrust on a course directly away from the sun. It was accelerating at almost five gravities—and it had broken its radio silence. An automatic recorder was broadcasting over and over again this interesting message:

  “I have landed on Phobos and am being attacked by a Z-class cruiser. Think I can hold out until you come, but hurry.”

  The message wasn’t even in code, and it left Commander Smith a sorely puzzled man. The assumption that K.15 was still aboard the ship and that the whole thing was a ruse was just a little too naïve. But it might be a double-bluff: the message had obviously been left in plain language so that he would receive it and be duly confused. He could afford neither the time nor the fuel to chase the scout if K.15 really had landed. It was clear that reinforcements were on the way, and the sooner he left the vicinity the better. The phrase “Think I can hold out until you come” might be a piece of sheer impertinence, or it might mean that help was very near indeed.

  Then K.15’s ship stopped blasting. It had obviously exhausted its fuel, and was doing a little better than six kilometers a second away from the sun. K.15 must have landed, for his ship was now speeding helplessly out of the solar system. Commander Smith didn’t like the message it was broadcasting, and guessed that it was running into the track of an approaching warship at some indefinite distance, but there was nothing to be done about that. The Doradus began to move toward Phobos, anxious to waste no time.

  On the face of it, Commander Smith seemed the master of the situation. His ship was armed with a dozen heavy guided missiles and two turrets of electro-magnetic guns. Against him was one man in a space-suit, trapped on a moon only twenty kilometers across. It was not until Commander Smith had his first good look at Phobos from a distance of less than a hundred kilometers that he began to r
ealize that, after all, K.15 might have a few cards up his sleeve.

  To say that Phobos has a diameter of twenty kilometers, as the astronomy books invariably do, is highly misleading. The word “diameter” implies a degree of symmetry which Phobos most certainly lacks. Like those other lumps of cosmic slag, the asteroids, it is a shapeless mass of rock floating in space with, of course, no hint of an atmosphere and not much more gravity. It turns on its axis once every seven hours thirty-nine minutes thus keeping the same face always to Mars—which is so close that appreciably less than half the planet is visible, the poles being below the curve of the horizon. Beyond this, there is very little more to be said about Phobos.

  K.15 had no time to enjoy the beauty of the crescent world filling the sky above him. He had thrown all the equipment he could carry out of the airlock, set the controls, and jumped. As the little ship went flaming out toward the stars he watched it go with feelings he did not care to analyze. He had burned his boats with a vengeance, and he could only hope that the oncoming battleship would intercept the radio message as the empty vessel went racing by into nothingness. There was also a faint possibility that the enemy cruiser might go in pursuit, but that was rather too much to hope for.

  He turned to examine his new home. The only light was the ocher radiance of Mars since the sun was below the horizon, but that was quite sufficient for his purpose and he could see very well. He stood in the center of an irregular plain about two kilometers across surrounded by low hills over which he could leap rather easily if he wished. There was a story he remembered reading long ago about a man who had accidentally jumped off Phobos: that wasn’t quite possible—though it was on Deimos—as the escape velocity was still about ten meters a second. But unless he was careful, he might easily find himself at such a height that it would take hours to fall back to the surface—and that would be fatal. For K.15’s plan was a simple one: he must remain as close to the surface of Phobos as possible—and diametrically opposite the cruiser. The Doradus could then fire all her armament against the twenty kilometers of rock, and he wouldn’t even feel the concussion. There were only two serious dangers, and one of these did not worry him greatly.