Keep Out. Fredric Brown.

(Wiki Commons,)

Keep Out

Frederic Brown

With no more room left on Earth, and with Mars hanging up there empty of life, somebody hit on the plan of starting a colony on the Red Planet. It meant changing the habits and physical structure of the immigrants, but that worked out fine. In fact, every possible factor was covered—except one of the flaws of human nature...

Daptine is the secret of it. Adaptine, they called it first, then it got shortened to daptine. It let us adapt.

They explained it all to us when we were ten years old, I guess they thought we were too young to understand before then, although we knew a lot of it already. They told us just after we landed on Mars.

“You’re home, children,” the Head Teacher told us after we had gone into the glassite dome they’d built for us there. And he told us there’d be a special lecture for us that evening, an important one that we must all attend.

And that evening he told us the whole story and the whys and wherefores. He stood up before us. He had to wear a heated space suit and helmet, of course, because the temperature in the dome was comfortable for us but already freezing cold for him and the air was already too thin for him to breathe.

His voice came to us by radio from inside his helmet.

“Children,” he said. “You are home. This is Mars, the planet on which you will spend the rest of your lives. You are Martians, the first Martians. You have lived five years on Earth and another five in space. Now you will spend ten years, until you are adults, in this dome, although toward the end of that time you will be allowed to spend increasingly long periods outdoors.

“Then you will go forth and make your own homes, live your own lives, as Martians. You will intermarry and your children will breed true. They too will be Martians. It is time you were told the history of this great experiment of which each of you is a part.”

Then he told us.

Man, he said, had first reached Mars in 1985. It had been uninhabited by intelligent life (there is plenty of plant life and a few varieties of non-flying insects) and he had found it by terrestrial standards uninhabitable. Man could survive on Mars only by living inside glassite domes and wearing space suits when he went outside of them. Except by day in the warmer seasons it was too cold for him. The air was too thin for him to breathe and long exposure to sunlight—less filtered of rays harmful to him than on Earth because of the lesser atmosphere—could kill him. The plants were chemically alien to him and he could not eat them, he had to bring all his food from Earth or grow it in hydroponic tanks.

***

For fifty years he had tried to colonize Mars and all his efforts had failed. Besides this dome which had been built for us there was only one other outpost, another glassite dome much smaller and less than a mile away.

It had looked as though mankind could never spread to the other planets of the solar system besides Earth for of all of them Mars was the least inhospitable, if he couldn’t live here there was no use even trying to colonize the others.

And then, in 2034, thirty years ago, a brilliant biochemist named Waymoth had discovered daptine. A miracle drug that worked not on the animal or person to whom it was given, but on the progeny he conceived during a limited period of time after inoculation.

It gave his progeny almost limitless adaptability to changing conditions, provided the changes were made gradually.

Dr. Waymoth had inoculated and then mated a pair of guinea pigs, they had borne a litter of five. By placing each member of the litter under different and gradually changing conditions, he had obtained amazing results.

When they attained maturity one of those guinea pigs was living comfortably at a temperature of forty below zero Fahrenheit, another was quite happy at a hundred and fifty above. A third was thriving on a diet that would have been deadly poison for an ordinary animal and a fourth was contented under a constant X-ray bombardment that would have killed one of its parents within minutes.

Subsequent experiments with many litters showed that animals who had been adapted to similar conditions bred true and their progeny was conditioned from birth to live under those conditions.

“Ten years later, ten years ago,” the Head Teacher told us. “You children were born. Born of parents carefully selected from those who volunteered for the experiment. And from birth you have been brought up under carefully controlled and gradually changing conditions. From the time you were born the air you have breathed has been very gradually thinned and its oxygen content reduced. Your lungs have compensated by becoming much greater in capacity, which is why your chests are so much larger than those of your teachers and attendants, when you are fully mature and are breathing air like that of Mars, the difference will be even greater. Your bodies are growing fur to enable you to stand the increasing cold. You are comfortable now under conditions which would kill ordinary people quickly. Since you were four years old your nurses and teachers have had to wear special protection to survive conditions that seem normal to you. In another ten years, at maturity, you will be completely acclimated to Mars. Its air will be your air, its food plants your food. Its extremes of temperature will be easy for you to endure and its median temperatures pleasant to you. Already, because of the five years we spent in space under gradually decreased gravitational pull, the gravity of Mars seems normal to you. It will be your planet, to live on and to populate. You are the

Children of Earth but you are the first Martians.”

Of course we had known a lot of those things already.

***

The last year was the best. By then the air inside the dome—except for the pressurized parts where our teachers and attendants live—was almost like that outside, and we were allowed out for increasingly long periods. It is good to be in the open.

The last few months they relaxed segregation of the sexes so we could begin choosing mates, although they told us there is to be no marriage until after the final day, after our full clearance. Choosing was not difficult in my case. I had made my choice long since and I’d felt sure that she felt the same way, I was right.

Tomorrow is the day of our freedom. Tomorrow we will be Martians, the

Martians. Tomorrow we shall take over the planet.

Some among us are impatient, have been impatient for weeks now, but wiser counsel prevailed and we are waiting. We have waited twenty years and we can wait until the final day.

And tomorrow is the final day.

Tomorrow, at a signal, we will kill the teachers and the other Earthmen among us before we go forth. They do not suspect, so it will be easy.

We have dissimulated for years now, and they do not know how we hate them.

They do not know how disgusting and hideous we find them, with their ugly misshapen bodies, so narrow-shouldered and tiny-chested, their weak sibilant voices that need amplification to carry in our Martian air, and above all their white pasty hairless skins.

We shall kill them and then we shall go and smash the other dome so all the Earthmen there will die too.

If more Earthmen ever come to punish us, we can live and hide in the hills where they’ll never find us. And if they try to build more domes here we’ll smash them. We want no more to do with Earth.

This is our planet and we want no aliens. Keep out!

End

Note.

From the editor’s point of view, stories of Mars colonization are a lot more credible than the colonization of Mercury or Venus, that’s for sure. Considering modern medical science, the biology isn’t so far-fetched anymore. The Moon, in our opinion, runs only a close second to Mars, that’s because Mars has an atmosphere that not only has water vapour in it, but raw materials that could be used to make rocket fuels and even air for any potential colony. 

‘Traces of oxygen’ might sound daunting, but it sure beats cracking moon-rocks with an even lower concentration of this precious resource. The Moon’s only real draw is that it is so much closer. It’s also strategic in terms of terrestrial warfare, and don’t let anyone tell you any differently. The Moon is a two or three-day trip, where Mars might be anywhere from six months to two years or more—one way. That’s the real difference. Now, in terms of scientific observation of the cosmos, the Moon probably does have its advantages—mostly in terms of the fact that it has no atmosphere to interfere with telescopic observation. It’s nice and close, but the International Space Station is even closer, and isn’t subject to quakes and other seismic phenomena.

In terms of solar flares and cosmic rays, it is true that a couple of feet of moon-dirt would make a pretty good, and relatively cheap shield for long-term habitation. The same is of course true on Mars.

Also, the second image is from Princess of Mars, Edgar Rice Burroughs, (1912).

>>> 

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Earthmen Bearing Gifts. Fredric Brown.

 

Earthmen Bearing Gifts

Fredric Brown

Mars had gifts to offer and Earth had much in return—if delivery could be arranged!

Dhar Ry sat alone in his room, meditating. From outside the door he caught a thought wave equivalent to a knock, and, glancing at the door, he willed it to slide open.

It opened. “Enter, my friend,” he said. He could have projected the idea telepathically; but with only two persons present, speech was more polite.

Ejon Khee entered. “You are up late tonight, my leader,” he said.

“Yes, Khee. Within an hour the Earth rocket is due to land, and I wish to see it. Yes, I know, it will land a thousand miles away, if their calculations are correct. Beyond the horizon. But if it lands even twice that far the flash of the atomic explosion should be visible. And I have waited long for first contact. For even though no Earthman will be on that rocket, it will still be first contact—for them. Of course our telepath teams have been reading their thoughts for many centuries, but—this will be the first physical contact between Mars and Earth.”

Khee made himself comfortable on one of the low chairs. “True,” he said. “I have not followed recent reports too closely, though. Why are they using an atomic warhead? I know they suppose our planet is uninhabited, but still—”

“They will watch the flash through their lunar telescopes and get a—what do they call it?—a spectroscopic analysis. That will tell them more than they know now (or think they know; much of it is erroneous) about the atmosphere of our planet and the composition of its surface. It is—call it a sighting shot, Khee. They’ll be here in person within a few oppositions. And then—”

Mars was holding out, waiting for Earth to come. What was left of Mars, that is; this one small city of about nine hundred beings. The civilization of Mars was older than that of Earth, but it was a dying one. This was what remained of it: one city, nine hundred people. They were waiting for Earth to make contact, for a selfish reason and for an unselfish one.

Martian civilization had developed in a quite different direction from that of Earth. It had developed no important knowledge of the physical sciences, no technology. But it had developed social sciences to the point where there had not been a single crime, let alone a war, on Mars for fifty thousand years. And it had developed fully the parapsychological sciences of the mind, which Earth was just beginning to discover.

Mars could teach Earth much. How to avoid crime and war to begin with.

Beyond those simple things lay telepathy, telekinesis, empathy...

And Earth would, Mars hoped, teach them something even more valuable to Mars: how, by science and technology—which it was too late for Mars to develop now, even if they had the type of minds which would enable them to develop these things—to restore and rehabilitate a dying planet, so that an otherwise dying race might live and multiply again.

Each planet would gain greatly, and neither would lose.

And tonight was the night when Earth would make its first sighting shot.

Its next shot, a rocket containing Earthmen, or at least an Earthman, would be at the next opposition, two Earth years, or roughly four Martian years, hence. The Martians knew this, because their teams of telepaths were able to catch at least some of the thoughts of Earthmen, enough to know their plans. Unfortunately, at that distance, the connection was one-way. Mars could not ask Earth to hurry its program.

Or tell Earth scientists the facts about Mars’ composition and atmosphere which would have made this preliminary shot unnecessary.

Tonight Ry, the leader (as nearly as the Martian word can be translated), and Khee, his administrative assistant and closest friend, sat and meditated together until the time was near. Then they drank a toast to the future—in a beverage based on menthol, which had the same effect on Martians as alcohol on Earthmen—and climbed to the roof of the building in which they had been sitting. They watched toward the north, where the rocket should land. The stars shone brilliantly and unwinkingly through the atmosphere.

In Observatory No. 1 on Earth’s moon, Rog Everett, his eye at the eyepiece of the spotter scope, said triumphantly, “Thar she blew, Willie. And now, as soon as the films are developed, we’ll know the score on that old planet Mars.” He straightened up—there’d be no more to see now—and he and Willie Sanger shook hands solemnly. It was an historical occasion.

“Hope it didn’t kill anybody. Any Martians, that is. Rog, did it hit dead center in Syrtis Major?”

“Near as matters. I’d say it was maybe a thousand miles off, to the south. And that’s damn close on a fifty-million-mile shot. Willie, do you really think there are any Martians?”

Willie thought a second and then said, “No.”

He was right.

End

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