Donald A. Wollheim

“ There had been two hot days through Kansas, standing by lonely roadsides while cars whizzed by without stopping, the strong sun beating down over the flat green plains, the insects alive with the fever of the endless wheat. Robin had to keep heading south, south and west always, driving down when cars were going that way. Down through Oklahoma, thumbing his way, sometimes with an Eastern tourist on his way to California, sometimes with a tired rancher or oil worker on a short haul to his home or town, sometimes with a bored truck driver anxious to have someone to talk to on the long trip. ”

“ All men are brothers."
Robin threw the switch.
Outside, the crater suddenly lighted up in a blinding white glare, a blaze that threw wild, dancing black shadows several miles across the floor, that momentarily lighted the great crags and precipices of the mountains, that made an outburst of grandeur in a moonscape of unearthly terror and beauty.
Five minutes later, when the flares had died down, Robin again threw the switch. The second set of magnesium bombs went off and again the crater was brilliantly lighted.
"On Earth that should stand out very sharply. It is nearly a new moon for them. ”

“ Thus far the landscape was the familiar desert of New Mexico, desolate and arid flatland with which Robin had become familiar on the trip down. On the horizon he could see the humps of mountains, the peaks that bordered the vast proving grounds. ”

“ For an instant it seemed as if the pressure had vanished in the rocket, for a split second the rocket stopped accelerating as it waited for the new impact. Then like a blast of lightning newly released from a storm, a shot of energy flashed through the racing metal body. ”

“ It collided with Robin. For a moment there was a wild scramble of arms and legs and then Robin's greatly superior Earth muscles overpowered the other's and the creature was caught. Robin held it tightly in his arms, carried it into the cave, and sat it down.
The spear had been knocked aside in the tussle and Robin looked at it with a glance. One glance was enough to make the young man realize that he had had a narrow escape. Its tip was bright and as sharp as a piece of broken glass. If the creature had thought to jab that spear, it might have been deadly. ”

“ At the far end of the structures, remaining hidden in the shadow cast by the moon, he looked outward. He could see, stretching out beyond, the level ground of the desert. He could make out the structures of what looked like hangars and machine shops, and he could see a number of vehicles, trucks, and odd cranes parked around. Far away he caught a glimpse of something white. Was it a rocket?
He crouched in the shadow and waited. After a while he heard no more footsteps, he saw the last lights in the barracks flicker out and silence descend on the station. He glanced at his watch. ”

“ Peter turned, a sharp light in his eye. "And now that you say it, do you know what that current is? It's the one that passes the break in the crater wall—the constant hurricane that we broke through to get in here, which rushes by the break so hard and so fast that it seals this cavern's quiet inner air as perfectly as if it were an air lock. It has to be that very current which passes somewhere lower down and warms this cleft!"
Robin nodded, a sharp excitement stirring him. "I think we have hit on it. The night time is the time to hunt for it. ”

“ The floor of the cleft occasionally slanted sharply, sometimes breaking steeply downward, sometimes necessitating jumps upward into the darkness. In the Moon's light gravity, Robin was a fantastic jumper, but the darkness made the problem very disconcerting. It was a strange thing to have to leap upward into a black void in hopes that what seemed like a wall in front of you would turn out to have a top and be but a giant step upward. He soared in the darkness, not knowing how near or how far the roof of the tunnel was, feeling strangely disembodied, the monkey clinging to his neck in transit. ”

“ In the mad helter-skelter, Robin and Peter and Korree ran as fast as they could to the far end of the cleft.
They dodged tree stalks, pushed through other patches, stumbled occasionally over obstacles, but carried on. Robin noticed even as he ran that the vegetation was already drying up and dying rapidly. The cessation of sunlight had probably been quite abrupt as the sun had sunk behind whatever crater walls made up the horizon above them. Evidently the growth here was geared to a short, heavy life and sudden death. ”

“ In a moment, the monkey leaped to the ground, then leaped in one tremendous jump to Robin's shoulder and perched there happy at finding companionship again. The monkey looked none the worse for its experience and evidently was getting along nicely on the Lunar vegetation. Thus encouraged, Robin fed himself, first carefully testing everything on the monkey, who objected to nothing.
But somehow the food was not entirely satisfying to the man, who felt that he needed more than that to recover his full energy. He looked again at the rabbits, looked also for the carcass of the dead one. ”

“ Facing death as he was, he knew that even at the moment of dying he would be rewarded with at least one secret of the universe now unknown to men. What was the secret? He wracked his brain trying to bring back to memory all that he had read on that problem.
And he brought back the memory that during the past few years a growing number of astronomers had begun to believe that the Moon was not entirely without an atmosphere. It wasn't believed to have much of one, but it had been pointed out that most meteors to hit Earth burn up at least thirty miles high. ”

“ It was, he thought, as he pulled the rocket along, the Moon and its weak gravity. He would only weigh a sixth of his Earth weight here, so would the cargo head, yet he would have the muscles necessary for much more than that weight. He would literally be a superman here—if he could survive.
Survival, he knew, would be the question. He didn't know whether even now he might be inhaling poison from the strange, thin sublunar air. ”

“ It was not as dark as the bubble-caverns below had been, for a faint light still penetrated down from the ceiling. They could make out the darker shadows of the surrounding growth, and the Glassies outside were moving figures each illuminated by a small circle of light from their head stalks.
"Evidently the sun is going down on the Moon's surface," said Peter. "It was low on the horizon when my rocket arrived. I wonder how cold it will get in this place?"
"It seems to be a little colder already," said Robin. "This may bring Von Borck out of his cave to see what's happening." ”

“ After a while, he saw that the Moon was gradually increasing in size. The rocket nose was definitely approaching the Lunar sphere. Because the Earth no longer swung into view, Robin also realized that the rocket nose must have reversed itself, must be heading moonward, must be falling to the Moon!
It would fall faster and faster now, as its trip through space was ending. It was held in the grip of a new world and would speed to its final destruction like a meteoric bullet. It would be another meteor blasting into the surface to flash instantly into powder! ”

“ Robin strained his ears. He was aware of the pounding of his heart struggling for oxygen. He was aware of a ringing in his ears from the low pressure. But now he heard over that a thin whistling, a high, steady rustling whistle coming from somewhere across the narrow, long cave he was looking in upon.
"What is it?" he whispered.
"A most unusual phenomenon," whispered Peter back. "The only thing that keeps the air in all this subterranean region from being sucked away to the surface. It's a volcanic current of hot gas, racing through this long channel at tremendous speed. ”

“ The Moon might harbor thousands and tens of thousands of bubbles; some might be hundreds of miles in scale; some, lower down, nearer the still-warm volcanic heart of the satellite, might even approach tropical climates and show little of the semi-monthly seasonal changes. In such places life might grow in profusion, might compel the kind of battle for existence as would bring out the evolution of a brain-carrying creature living on its wits. ”

“ Peter grew quiet, as if a little amazed at his own outburst. Robin drew close to him, threw an arm around him. "I think when more men get out among the stars, people are going to realize that we can't afford to think of ourselves as anything other than citizens of Mother Earth. In the face of the universe, of Moonmen, of the inhabitants of the millions of other planets that must exist, our national differences seem so small, so much a private family matter as not to be thrashed out in the public of our interstellar neighbors. I think it's good we are brothers. ”

“ Korree said back in a normal tone, "Animals. White light is hunting eater. I watch it."
"Here? In this tunnel?" asked Robin, startled.
"Not in tunnel," said the Glassie. "In new bubble-place."
Robin looked around. Sure enough he had not noticed the echo of their feet in the last few minutes. The floor had changed from rock to sandy dirt and he realized that he had lost some of the enclosed-air feeling. It was indeed a new bubble-cavern—but a lightless one! ”

“ Inside the rocket, Robin had been unable to hear what they had been saying. Their voices came to him heavily muffled and distorted and he could not recognize the words. He heard the man come up the scaffolding ladder and try the door. But it had been tight and it had not budged. Then he'd gone down and a little later Robin had heard the jeep drive away.
Robin lay there quietly on the soft padding and wondered how long he should stay in hiding. They might have left a man on guard or they might be keeping an eye on the rocket. If he came out right away, they might spot him. ”

“ Around them were the first shoots of the stubborn and hardy surface vegetation in this crater, dwarfed cousins of the plants below.
They caught their breath. "Better get moving," said Peter finally. "This sun is dangerous."
They started across the floor of the crater, the several hundred feet to where the nose of the wrecked Russian rocket rested. Both men knew they were bruised from the short, mad trip. There would be scraped shins and knees and elbows. But they had made it, that was the thing.
They were about a hundred feet out, when suddenly Robin stopped, stared into the sky. ”

“ A real space suit like mine is pressurized, built with a layer of air pockets all over, which increase their pressure in proportion to the decrease outside. But if you don't have this pressure, even having air around your head will not help. So make those bandages tight, as tight as you can without stopping your breathing completely."
They worked on, winding the leather around and around, until Robin felt as if he were being encased in a strait jacket, felt like a living mummy. ”

“ For several more days they traveled, always working upward, passing through bubbles of gradually diminishing diameter and sparser vegetation. At one point they waded through a shallow pond, at another they choked in a sulfury cloud of gas that hung about. They squeezed through ever tighter cracks, and the air began to get distinctly thinner and harder to breathe. They were both getting exhausted quite easily; Robin knew they were nearing the surface and the spongy mass of the Moon's interior was tightening. ”

“ But Robin had been trained well. His life had never been a particularly easy one and the crying had almost certainly got out of his system during the days when as a little boy he had wandered through a war-torn land hungry and homeless. Life in an orphanage, at best, lacks much of the careful comforts of parents' hands, and those who had come out of such upbringing learn strong self-control early, learn to hold their jumping nerves in check at moments of tension and crisis. ”

“ So thin indeed that if the Moon had a belt of air only that dense, it might not be particularly detectable from Earth, might not make much difference from the surface—it was almost a vacuum so far as living matter would be concerned—but it would suffice to burn up meteors!
So it seemed likely that his rocket nose would be heated to incandescence by the tenuous Lunar atmosphere and burn to ash long before it touched the surface.... It wasn't a comforting thought—he rather preferred the original conception of crashing.
Robin smiled grimly to himself. A dismal prospect, indeed. ”

“ I couldn't rate a pilot's commission because I'm no college man, but I bet I could qualify as a mechanic, get to work on the rocket planes. Why, maybe I could even manage to get sent to White Sands, work on the Space Platform and the Artificial Satellites. Maybe someday I'll be one of the guys who help tool up the first rocket to the moon!
He found himself growing excited at the thought. But, he reminded himself, my chances are slim of getting what I want. There are so many good guys in the Air Force, my own chance of being sent to one particular place is small, really small. ”

“ His rabbit had a nice litter at last, and Robin carefully saw that they were kept well supplied with food and drink. He would eat no more meat until there were several dozen adults, all breeding. But he felt that now he was assured of a source of clothing when his own would give out. He knew that eventually he would have to dress himself entirely in the products of his own ingenuity. His Earth clothes could last no more than a few years. He had already devised for himself an experimental pair of sandals from the rinds of the ball-tree fruit and the stalks of the Moontrees. ”

“ All about, the giant bare mountains ringed the crater. Their gaunt, jagged outlines were a black ring against which was set the star-strewn wonder of the sky, in whose exact center slowly rotated the marvelous globe of Mother Earth. ”

“ Peter started off. Robin followed as fast as was possible. There was evidently a thin ledge running up the side of the cave. In places it was a gentle slope angling upward, in other parts there was a sudden step. In their haste there was no time to pick and choose their steps. Several times Robin tripped, almost falling, but he had built up such a momentum that he simply slammed and banged over the obstacles, charging up the ledge with a luck and agility that would have made a mountain goat jealous.
Behind them, at the base of the cliff, they now heard Von Borck's roaring. "Teufel!" ”

“ The closer he drew to his objective, the more excited he became. When the oil fields and gray lands of Oklahoma began to turn to the green flatness of the Texas Panhandle he grew silent, more intense. And finally, one morning when he sped out of Amarillo sharing the high front seat of a giant trailer truck bound for El Paso, he was almost speechless for miles and miles. Then, suddenly, as the road clicked across the invisible border of New Mexico, he began to talk. ”