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09:54 pm: War of the Worlds Two! We invade Mars!

New story by Steven G. Johnson:


sequel to



In the final years of the Nineteenth Century, the pitiless intellects of Mars were moved by desperation to attack our own warm world in the hopes of adding it to their domain. For the inhabitants of the Earth, they had few firm intentions; we would supply their conquest in its early stages, then pass from the scene. Their eyes were on our water, and the heat of our mutual Sun.

The story of how the invaders came to grief is well known. The equatorial regions were too hot, their plant and microbial life too variegated, for the Martian physiognomy to cope with. Cooler regions in Europe and East Asia were held by great numbers of organized humans, who fought with relatively primitive weapons against plasma bloom and corrosive vapor. Only the vast empty lands rimming the Arctic Circle, in Siberia and Canada, offered a foothold to the invaders, and those only a temporary respite as the aroused fury of the Americans, Europeans and, to everyone’s surprise, Japanese mounted colossal armies to reduce the Martian strongholds with the furious implacability of advancing ice.

From equipment, the partial diagrams used by the Martians’ mechanical servants, and the instructions they issued their human captives, we determined the means by which they had come here. We could not duplicate it in reverse, to visit a hundredfold on their homes what they had done to ours. For the gravitation in effect on Mars’ surface is barely more than a third of what we daily endure; and by the cold equations of ballistics, a voyage in the other direction must necessarily begin with an acceleration not merely three times as great, but nine, being the square of three. No human frame, however cushioned, could survive such a shock as that.

So we built, and studied, and explored alternatives. Our population we estimated at tens of thousands that of ancient, withering Mars, albeit the mechanical energy they could bring to their tasks was at least our equal. All Earthmen united in the common goal; so long as Mars was free to strike us, they might do so at any moment, until the sword was struck from their hand by main force.

So we schemed, and probed the secrets of nature, and armed for their return, and our eventual own. And as by the process of criticizing every stratagem, airing and debating every doubt, we winnowed out the best of all alternative courses, and slowly and surely drew our plans against them.

As with any artillery, the entire impetus of the vessel carrying astronauts across the deeps had to be transmitted in the very first moment of the voyage. Our enemies had used some form of flameless propulsion to hurl themselves from their planet’s edge. We were restricted to the fuels and explosives which chemistry allowed. A projectile sturdy enough to survive the shock of launching could, it appeared, just be devised given the utmost refinement in metallurgy and assembly; but it could not carry any one or anything, being of its required nature completely solid.

Although the projectile thus fired would pass between our worlds for several months at a sedate speed (so-called only by comparison with the immense distances involved), as it neared the target world, Mars’ own gravitation would go to work, speeding the projectile faster and faster until, at its eventual impact, its velocity would be equal to that of those minuscule stones which form the shooting stars of which astronomers are fond. But shooting stars become visible as friction with our Earth’s air heats and boils them; Mars has barely any of that same armour against missiles from above. The collision between our projectile and the Martian surface would resemble the detonation of a trainload of high explosive, all concentrated in one place. Some savants opined it would be closer to a shipload than a trainload.

Compared to the area of a world, such destruction would be nugatory indeed. Which is why every telescope was trained on Mars, for every nighttime instant she was visible above the horizon. And by the time the flashes of light against the rugose plains announced our enemy’s intention to try again, those selfsame flashes, measured and cross-checked, told us where to aim the greatly-multiplying siege engines across the equatorial territories, and so the rain of retaliation from the Earth commenced.

Various means of eluding the cold equations of ballistics were proposed, and some were tested, with dreadful results in a few cases. What the British Empire deemed too risky, the French, or the Americans, might try, and what even those venturesome republics thought too far from the pale of reason, the Russian Czar or the German Kaiser might well dare. The Empire of Japan agreed to build and develop what Europe had devised, as did Italy, Austro-Hungary, and other minor scientific states. For it was science, not sheer numbers, military might, wealth in specie or credit, nor even the high level of civilization a nation possessed, which made them useful to the great crusade.

It was the Austro-Hungarians, with their tradition of small, sidewise steps toward great goals, who hit upon the only practical way to convey our avengers across the gap. The bulk of the shock on our voyagers would be incurred in hurling them loose from the surface of our planet, into the upper atmosphere. From there, they would assume an orbit like that of our Moon, eternally falling yet remaining aloft. And from that apparently self-contradictory condition, it remained only to impart a velocity sufficient to traverse the gap between worlds in a short enough time that provisions might hold out, yet not so swift that their impact at the far end should render all aboard unable to fulfill their tasks.

What these tasks were to be, come the day, had yet to be decided. But there was ample time for lively debate, while in British India, French Africa, South America and the German Pacific, the mortars to hurl our astronauts into orbit were constructed, and the anchorage in the sky from which the invasion fleets were to sally was nightly taking shape above our heads, visible to the merest glass or set of hand-held lenses.

Nor was there but one synthetic star in the heavens which we and the Martians contested. For no agreement was reached over the proper design of the anchorage, with seven separate efforts mounted in parallel by various nations. That of France was quickly abandoned by her fickle administration, which had an even better idea at an average of every six months. One effort begun by the United States was let languish, then sold to the British Empire, as the Americans pursued another idea with redoubled vigor. 

This was to base construction of the invasion fleet, not in orbit above the Earth, but upon the Moon, whose feeble gravitation would scarcely impede the long journey's start but whose ready supply of minerals might save much labour and effort. For every pound which went into the invasion vessels' construction must needs be lifted from the Earth, at great cost in propellant, but also of time, for only a finite number of such launches could be cast aloft each day. On the Moon, so the argument ran, metal and stone were free for the taking, and if there be ice under the lunar surface, water and air would be much easier to extract than to haul labouriously aloft.

On the mathematical surface, the Lunar initiative had everything to recommend it. Leave alone that no reliable method for smelting metal from ore in the absence of an atmosphere had yet been devised; we would devise one here, under the surface of our lakes and oceans. Set aside the imponderables of working with heavy machinery while garbed in an air-tight garment; we would adapt the clothing of deep-sea divers, and test them in chambers emptied of air for the purpose in our many universities. And let alone all clamour over the prodigious amount of heat required, for fuel, to burn, must have air, and plentiful air at that. These problems had existed in the internal-combustion engine, which was on its way to being perfected, and would yield to painstaking measurement, careful computation, and hard-headed practicality.

In short, the very characteristics in which the Martians excelled all mankind.

We should not have been surprised, then, when the thinking of the great brains of Mars paralleled our own. When their second invasion failed more swiftly than the first, they reckoned the great disparity of their means to ours, and resolved to redress the balance by removing their base of operations much closer to their target. They, too, would extract their essential minerals from the soil of a dead world, but not from their own, but one even further along the path to senescence than the red mausoleum from which they proposed to flee. They, too, would husband their resources on a nearby astronomical island, before rushing the final gap with at least locally overwhelming force. And they, too, would strain every effort, as before they had only imagined themselves to have done, to secure victory over the only portion of the celestial universe on which life as we both defined it could comfortably endure.

They, too, would require the Moon for their purpose. Who controlled the Moon, would control the Earth.


Originally posted to Welcome to Arhyalon. (link)

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