Astounding Stories of Super-Science, November, 1930, Various [popular books of all time txt] 📗

cientists bidding their families good-by in the morning to drop fifty or a hundred miles underground in high speed elevators, there to undertake researches not possible nearer to the earth's surface, may be realities of the next decade or two if some wealthy individual or institution accepts the recommendation of Dr. Harlow Shapley, distinguished astronomer of Harvard, in a talk recently before the American Geographical Society.

The earth's interior, Dr. Shapley said, is the "third dimension" of geography. Exploration of the planet's surface soon must cease from lack of places to explore. Even the upper air is coming to be reasonably well known scientifically, thanks to instruments sent up with balloons and to the radio and other investigators who have been uncovering secrets of upper-air electricity. But the interior of the earth is still one of the great mysteries. It is a paradox of astronomy that much more is known about the center of the sun or a star like Sirius than about the center of the earth.

Deep shafts of bore holes into the earth have been suggested often as sources of heat for human use. It is doubtful, however, whether such heat supplies could be obtained. For one thing, the supposed internal heat of the earth is still nothing but a guess. It may be that the relatively slight increases of heat found as one goes deeper in existing mines are due to radioactivity in the rocks instead of to outward seepage from the internal fires. Another difficulty about utilizing earth heat is that heat moves so slowly through substances like rock, as any housewife can prove by trying to fry an egg on a brick placed over a gas flame. As soon as the rock heat immediately at the bottom of a bore hole had been exhausted heat supply would stop until more could diffuse in from the sides.

Dr. Shapley's suggestion, in any event, is not to search for heat but for facts. Even in existing, relatively shallow mines, he believes, scientific laboratories at different depths under the surface might yield valuable data not now obtainable. Most scientific men will agree. Revolutionary as the idea may seem to those familiar only with the standardized laboratories of physics or chemistry, there are sound reasons why a half-dozen or so of the sciences should do precisely what Dr. Shapley suggests.

At least one underground laboratory has already been installed, for Prof. E. B. Babcock of the University of California has such a workroom in the Twin Peaks Tunnel, underneath the mountain that rises above the city of San Francisco. Natural radioactivity in the rocks thereabouts is greater than normal and Prof. Babcock finds that this apparently increases new species among fruit flies.

To dig out laboratory rooms a mile or so down in existing deep mines probably would cost far less than many enterprises already financed by philanthropists. Even to deepen these shafts for several miles would be much less difficult than most people imagine.

Increasing heat, if it is found that heat does increase, would not be difficult to overcome had the engineers sufficient money. Ventilation and transportation to and from the surface, while too costly for the business enterprise of winning metals from very deep mines, probably would present no serious difficulty were facts the chief object instead of profit. The only question to be decided before intending benefactors of science are urged to consider some such project is whether or not the facts likely to be won promise enough value to mankind.

An excellent case can be made out for answering yes. Dr. Shapley mentioned four chief lines of investigation suitable for such deep-mine laboratories: studies of gravity and of the variable length of the day, researches on the various kinds of earthquake waves, experiments on ether drift and tests of the biological effects of cosmic rays and of the rays from radium.

Astronomical theories indicate that the day ought to be growing slightly longer as the earth's rotation decreases a trifle from century to century because of friction from the tides. The actual length of the days seems, however, sometimes to be decreasing a tiny fraction of a second from year to year, as theory says that it should; sometimes to be increasing in a way for which no present theory provides. Observations underneath the earth, with a portion of the planet's crust and gravity overhead, might yield important clues to the cause of this mysterious wrong time kept by the terrestrial clock.

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They were almost upon him when he leaped into action. The Gray Plague By L. A. Eshbach CHAPTER I

ive months before the beginning of that period of madness, that time of chaos and death that became known as the Gray Plague, the first of the strange meteors fell to Earth. It landed a few miles west of El Paso, Texas, on the morning of March 11th.

Maimed and captive, in the depths of an interplanetary meteor-craft, lay the only possible savior of plague-ridden Earth.

In a few hours a great throng of people gathered around the dully smoldering mass of fire-pitted rock, the upper half of which protruded from the Earth where it had buried itself, like a huge, roughly outlined hemisphere. And[211] then, when the crowd had assumed its greatest proportions, the meteor, with a mighty, Earth-shaking roar, exploded.

A vast flood of radiance, more brilliant than the light of the sun, lit up the sky for miles around. One moment, a throng of curious people, a number of scientists, newspaper men—a crashing explosion—and then a great, yawning pit sending forth a blinding radiance! Destruction and death where life had been.

The brilliant light streamed from the pit for about ten minutes; then like a snuffed-out candle flame, it vanished.

The second of the strange meteors landed on the evening of March 13th, in the city of Peking, China. It demolished several buildings, and buried itself beneath the ruins. The Chinese, unaware of the tragedy at El Paso, gathered in the vicinity, and when the meteor exploded at about ten o'clock that night, were instantly destroyed. As in Texas, the great pit emitted a cloud of dazzling light for about ten minutes, throwing a brilliant glow over[212] the city and its surroundings; then was extinguished.

The people of the world awoke to the fact that events worthy of more than passing interest were occurring. The press of every nation begin giving the strange meteors more and more publicity. Statements of different pseudo-scientists were published in explanation of the meteor's origin, statements that aroused world wide conjecture.

pproximately twenty-four hours after the falling of the second missile, the third one fell, landing near Madrid, Spain. The Spaniards, having received news of the El Paso and Peking tragedies, avoided the ugly mass of rock as though it were a dreaded pestilence. In every way its action was similar to that of its two predecessors.

The interest of the world was doubled now. The unusual similarity of the action of the meteors, and the regularity of their landings, seemed indicative of a definite, hostile purpose behind it all. A menace from the unknown—a peril from the skies!

Scientists began giving serious consideration to the unusual phenomenon, pottering around in the pits, wearing airs of puzzlement. But their investigations were of no avail, for nothing of any great significance came to light through their efforts.

At about that time, an announcement was made that created a furor. Astronomers in different parts of the United States reported that they had observed a bright flare of light leaping up from the darkened portion of the planet Venus. The astronomers had no definite idea of anything of importance in back of what they had seen; but not so the masses. The flare, they said, was caused by the release of another meteor!

From Venus! Missiles, hurled by Venerians, menacing the Earth! The silver planet became the subject of universal discussion; innumerable fantastic articles about it appeared in magazine sections of Sunday newspapers. And the astronomers of Earth turned their telescopes toward Venus with an interest they had never felt before.

our days of expectant waiting passed by after the third meteor had fallen, while interest continued mounting at an accelerating pace. And then, at about two o'clock in the morning of the 18th, three great observatories, two in North America and one in England, recorded the falling of an extraordinarily large and unusually brilliant meteor that glowed with an intense, bluish-white light as it entered the Earth's atmosphere. And, unlike most meteors, this one was not consumed by its intense heat, but continued gleaming brilliantly until it vanished below the horizon. Simultaneous with the falling of the meteor, the Earth was rocked by one of