Part 3

High wages and cheap machines had meant that everyone owned one. And so absolutely safe were they that they commanded perfect confidence. This had been a big factor in the making of this mighty fleet. Everyone knew how to operate the machines, so it was easy to fill the places on the machines with pilots.

Nevertheless, special training was necessary to overcome the caution against quick turns that long experience had instilled in them all. Each accepted applicant was taken up in one of the new machines, and given a breath-taking ride--a ride that consisted in diving toward the Earth with terrific sudden acceleration. Then, just when the student felt certain they would crash and become a mass of molten metal, the ship was brought up, not a mile from the ground, to settle gently; then, when they almost touched the ground, they leapt into the air again with an acceleration that shot them out of the atmosphere with the velocity of a meteor, while the outer wall of tungsto-iridium alloy glowed cherry red. Then came sharp turns at ten or twenty miles a second, till at last the students no longer gripped the arms of their seats in anticipation of a sudden acceleration. Then they were taken down and given a ship to experiment with.

But none of these men had ever handled a weapon of the sort they were to use, so mimic battle practice was held, with the glowing rays of a harmless ionizing beam instead of the deadly Dis rays.

* * * * *

Daily reports were coming from the Martian scouts as time went on. The Sirians, too, had decided to do some fleet building, for nearly three-quarters of their fleet had been destroyed. The production rate of man's factories, 120,000 a day, had gained a slight lead. It would require ten days before a fleet of a million could leave for Mars with a home guard of two-hundred thousand ships.

The destruction of the Martian plants had lowered the production rate to about 3,500 an hour, but shops put up rapidly on Earth and Venus had quickly brought the production-rate back, and it would be nearer 7,000 an hour by the time the last of the fleet had been finished.

The spinning sphere formation of the Sirians had been almost invulnerable, and an exceedingly destructive formation. The Solarians had chosen several thousand of their crack pilots to practice this maneuver, but despite almost constant practice during the entire ten days, it was a miserable failure as soon as they tried to progress. Standing motionless it was a very effective procedure, but the spinning column was decided on as more effective as long as they had no ship to protect. There were twenty groups that practiced that maneuver.

And then Waterson announced that an associate of his, working in his laboratory, had developed a method for using a triple electrical field to direct the Dis ray, making possible a ray with a range of over sixty miles. This would be absolutely fatal to the spinning sphere system of the Sirians. The Sirians very evidently did not know how to project the Dis ray any further than twenty-five miles. The ability to stand off and hit them would break down the sphere of Dis rays very quickly. There was only one objection. The rays were very powerful, so powerful that they required triple power generators, but the special field of electrical force was the worst problem. The field could not be made sufficiently strong if a single layer of the force was used, but the invention of a method to back up the first with two other layers of equal voltage, thus getting nearly three times the effect without exceeding the capacity of the insulation, had made the new machine possible. This special field was produced by circularly moving cathode rays, or exceedingly high velocity electrons, and therefore could be produced only by atomic methods. This meant ten thousand times the amount of fuel a similarly powered material engine would have required, but material energy of course yields only wave motions of the transient or unstatic type, a type that cannot stand still. Atomic energy can yield static-waves as well as unstatic; the electron can stand still, and is a perfect example of the stationary wave.

These limitations, in turn, meant that a tremendous weight of equipment was needed. And a corresponding great volume of space was required. In the end they had to use specially reinforced freighters to carry the great projectors, each of which could carry but two projectors. Due to their long range, however, the ships were at least self-protecting. There was not time to make and equip more than twenty-eight of these ships before the fleet was scheduled to start. They were completed ahead of time. Some of their trial trips more than fulfilled the best hopes of the inventor. Dr. William Carson, the physicist who developed it insisted that it was really Dr. Waterson's suggestions that made the thing possible.

We had learned something of spatial warfare formations from the Sirians. Now we were to learn a bit of the strategy of spatial warfare.

* * * * *

The Solarian fleet sailed for Mars on the fifteenth of August, 1961. They were a scant twenty million miles from their goal when a report came from a scout that something was happening down in the Sirian camp. Almost immediately after that the Sirians flooded our entire system with so terrific a barrage of radio frequency static that communication was impossible. They could not transmit from Earth to Venus, and the communication was very poor even from one side of Earth to the other, despite the fact that over a half billion kilowatts were used. So intense was this barrage, that if two of the torpedo-ships near the sending apparatus came within twenty or thirty feet of each other, great crashing sparks leapt across, and instantly they were fused. Scouts saw this happen twice.

The Solarian fleet continued on for Mars. They should cover the remaining distance--twenty million miles--in five hours by pressing the ships a little, although higher speeds made the rate of approach of asteroids so great that they frequently could not be detected before they collided with the ships.

Only two and a half hours later a scout came into sight at terrific speed. He must have been doing over two thousand a second, an exceedingly dangerous rate--but his acceleration neutralizer enabled him to slow down safely. He reported that the entire Sirian fleet had risen from Mars, leaving a very few machines behind--this time taking the sphere with them--and had set out for Earth! Earth was on the other side of the Sun--a long two hundred and twenty million miles to go! The Sirians had a lead of three hours. They had as great a speed as the Solarians and would reach Earth before the Solarians. But they would at least be delayed by the two hundred thousand ships--more now, for the steady production would have built the quota up to over six hundred thousand, or a million by the time they could return. The Sirian fleet had been built up to nearly three million though, which could easily crush the fleet of a million, and the second million later--separately. The trip would take them sixty-two hours. Scouts had been sent ahead to Earth at a dangerously high speed to communicate the news, and the entire fleet had increased its speed to a rate that was considerably higher than safety warranted, but a continuous play of Dis rays was considered sufficient safety at fifteen hundred miles a second. The Sirian fleet had been reported to be making thirteen hundred and fifty, so the Solarians should pass them, or meet them, just shy of the Earth, where the other fleet would be waiting. They should have no difficulty to crush the Invaders with the two million ships.

The radio interference was being maintained by a ship anchored somewhere in space. It was no doubt well protected, and to attack it successfully would have meant the loss of a large number of ships, for the time spent in the attack would delay them irreparably. They must continue to Earth.

There were no scouts from the Sirian fleet--yet there should have been, for over a thousand ships had been following them, far behind. None ever reached Earth to warn the fleet. Every one of them was destroyed. But when the Sirian fleet was well on its way--it turned--and headed _for Venus_! They had purposely let that one scout reach the Solarian fleet with the news that the fleet was headed for Earth--then they redirected their course. The scouts from the Solarian fleet did reach Earth--but soon after the last of the scouts following the Sirian fleet had been destroyed, their radio barrage was lifted. All the ships on Venus were concentrated on Earth, and Venus was left unprotected.

Twenty hours after the fleet had turned back, the radio barrage was again lowered over the System. It was ten hours later that the Sirians reached Venus.

While the radio barrage had been lifted, Waterson had had an idea that there should be some protection for the planet. It did not seem that the planet should be completely stripped of its defenses, and he had suggested that at every city great Dis ray machines of the sixty-mile range type be set up. His suggestion was followed, and at every city on Venus the great machines were installed. There were many of them now, for during the hundred hours the main fleet was in flight the new machines had been put on a quantity production basis. But all the ships that were equipped with them, were sent to the defense of the unattacked Earth! And it was those machines that prevented the landing of the Sirians. They came to the night side of the planet, of course, coming from Mars. It would be thirty hours before they would be expected on Earth--thirty hours before the main fleet would reach the planet--and then there would be the 160,000,000-mile trip to Venus if they were to get there in time to rescue the planet.

But the Sirians could not approach within beaming distance of the cities, and all those that did try to do so, were brought down as a cloud of powdery dust. It was Waterson's caution that saved the billions of people on Venus.

But were they to be saved? The Sirians decided they must destroy the works and the people on Venus, so they made one desperate effort. They had at least sixty hours to work in, and now they had a plan that would require time. They retired some hundred miles from the planet, then the entire fleet, torpedo-ships, cargo boats, and the entire body guard of the Sphere lined up, and then switched on powerful attractor beams. Immediately, the combined effect of over three million of these emanations took hold on the planet, and great tides began to rise in its mighty oceans. Many lives were lost in the seaside towns, when the tremendous waves rushed in over the land. But astronomers on the planet and most of the System's scientists were there to watch the Sirians on Mars through their great telescopes. And these astronomers saw what the Sirians intended, and saw that they were well on their way to fulfilling their aim.

* * * * *

A planet is balanced in its orbit about its parent sun with the delicacy of a diamond on a jeweler's scales. But, like the diamond, if it be displaced by some force, it reaches a new state of equilibrium. Thus, if the diamond is further lowered in the scale by adding a small weight, it soon reaches a new point of equilibrium. No conceivable force, therefore, could be great enough to displace the planet in its orbit more than a few million miles by pulling it either in toward the sun, or out from it, and as soon as that force was released, it would spring back to its original position as the diamond would regain its balance on removing the disturbing weight. For the sun pulls on a planet with a titanic force; it draws it in with the apparent force gravity, and another similar, but opposite force, centrifugal force of its revolution in its orbit, is constantly tending to throw it into the depths of space. These are the two forces that are always balanced. Suppose the planet is drawn nearer the sun; it revolves in a smaller orbit--and it revolves in that smaller orbit with a higher speed--for it has fallen in toward the sun; it has gained speed as any falling body would. It has gained speed in the direction of the sun, but this has operated to increase its rotational speed. Thus it has gained a greater centrifugal force--you can see the effect with a bit of chalk on the end of a string. The smaller the circle it swings in, the greater the tendency to fly outward. But as long as we continue the force that was added to draw it in, it will remain in equilibrium. Remove this extra force and at once the planet will fall away from the sun, losing speed as it does so, till it has reached a point where it is once more in equilibrium with the force drawing it inward.

Now reverse the problem. Let us draw it away from the sun. Now the orbit is longer, and it has lost speed in moving from the sun. It cannot stay here, it is not in equilibrium, unless the force that drew it out is maintained. To free the planet from the sun, one would have to lift hundreds of quintillions of tons of rock through billions of miles, against the terrific gravity of the sun. It is too much.

Thus we see that as long as the planet revolves in its orbit, it will never fall, and to pull it away from the sun is impossible as long as it revolves in its orbit. But if it slows down in its flight about the sun it at once has less centrifugal force. It automatically falls toward the sun until it has gained velocity enough to establish a new orbit of equilibrium. If this energy, too, is withdrawn; if it is made to stand still in its orbit; it will fall straight to the sun. It is the only way such a thing might be done. And it would take the energies of matter, and strain that to the utmost, to accomplish it.

This was the plan of the Sirians. Three million ships were dragging like a Titanic brake on the planet as it wheeled in its orbit, and slowly, steadily it was falling into the blazing furnace of the sun. Their ships were not designed for this task, but they could do it in the sixty hours at their disposal. In a short time it would be falling directly toward the sun, but it would take many hours for the seventy-million-mile fall. Even if it were stopped before it reached the sun, any place within twenty million miles would be unbearable.

It was the distressed planet itself that warned the people on Earth and the men of the fleet that the Sirians would never reach Earth, for the radio was still dead. But the fleet turned for Venus at once. They were far to one side of the path to Venus, and they would have to turn, but it would take them thirty, instead of sixty hours to reach Venus. And the other fleet was coming from Earth. They were not quite a million strong, but those machines that had been produced on Venus would come also, and that would bring the total numbers up to over a million, and with the main fleet the number would be well over two million. There were also three hundred of the long range Dis ray ships now, for many more had been produced and Venus would supply an equal number.

* * * * *

We can only admire the wise action of the Commandant of the Venerian fleet, Mals Hotark, in not sending his pitiful fleet of a few thousand out to fight with the Sirians. The members wanted to, the people of Venus wanted him to, but he wisely waited until he saw the fleets of the System approaching. It would have done no good, and lost many lives, and valuable ships to have gone in advance to the attack.

Many people tried to leave Venus, but enough machines were freed of the task of stopping the orbital motion of the planet to patrol the heavens and keep the people from leaving. They beamed thousands of private cars out of existence; it seemed unnecessarily cruel.

The two great fleets were drawing nearer to the planet, converging, and at last they got so close that they could carry on a radio communication by using the terrific power of over two billion kilowatts of energy. The amount of power that Sirian machine was throwing off has been estimated at a minimum of fifty billion kilowatts. We know that enough power could be picked up from a hundred meter aerial on Earth to operate a small, high frequency motor.

When radio communication was established, they agreed to wait until they could join, for the fleet from Earth was two hours ahead of the main fleet. The loss of time was made up for in greater efficiency of action. They would need it all. At last they joined fleets, one mighty disc of two million airships, they flew on through space at a steady rate of five and three-quarter million miles an hour. They arranged themselves in a mighty cone as they came nearer Venus. Already the machines had slowed it down so greatly that the planet was over a million miles out of her orbit, and rapidly adding to this mileage.

But now as the great cone approached, the great ships with the long range Dis rays leading, they were discovered. The cone formation was chosen, for that is the three dimensional equivalent of the two dimensional V that man had used in war on earth for thousands of years.

Now began the greatest battle in the history of the System. Here were two mighty forces slashing at each other with terrific disintegration rays, fighting in the great Void, and five million powerful ships darting around, slashing, stabbing with a death that struck with the quickness of light.

As the great cone of the main fleet attacked from one side, there was a smaller cone attacking the Sirians from the other, but long before the Sirians could bring their rays into effect the long range rays had torn great holes in their ranks. The Sphere had retired with its escort at once, going swiftly to Mars. The main fleet was too busily engaged in fighting the Sirians' main fleet to worry about the Sphere at present.

A dozen times the great spinning sphere formation was tried by the Sirians, but each time a withering blast of the long range Dis ray cut it up as a tool held against a spinning block of wood cuts it down in the lathe. Their strongest formation was useless, and they could no longer outmaneuver the Solarians, the new ships could turn and dart as quickly as they, or even more quickly. The big Dis ray ships were not equipped for fast fighting, so when there were none of the spinning sphere formations to break up, they retired to a safe distance, and waited for any ships that might attack them. Few did. It proved suicidal. But steadily the forces of man were conquering. In a hell of flashing Dis rays, the new ships were proving their worth. The flaming rays had seared the land below for many miles, but the fleet of the Sirians was fast going. The new fast ships of man could dodge the rays of the Sirians, turn and dart on the tail of their attacker, then hang there, the attractor beam giving them an added grip until they could flash the machine into nothingness with the Dis ray. They turned, ducked, darted ahead with terrific speed, suddenly stopped, and then were going full speed again. And another Sirian ship was gone. Now it was the delicate apparatus of the Sirians' ships that suffered; they could not keep up with the sudden turns of this flexible adversary. And their great fleet had been reduced to a scant quarter million, but we had lost nearly a half million ships, five million men, in that Titanic struggle. Such a battle could not last long. It was impossible. Nothing could stand before the Dis rays, and with those turning, darting ships, sooner or later every ship must come under the influence of those rays. But now the last of the torpedo-ships were fleeing into space. But we did not care to have to fight them again--and they too were rayed out of being. They could no longer dart away from us before we could catch them--that was for us now!

But now the fleet returned to a greater task. Venus had been falling toward the sun, and was nearly a million and a quarter miles off and within her orbit. Now a great fleet of cargo carriers from Mars, Venus and Earth came up, and with them came wrecker ships, capable of picking up on their powerful attractor beams an entire million-ton passenger-freight liner--great liners themselves, all equipped with attractor beams. Soon they were all using their power to bring the planet back to its normal speed. It did not take the ships of that mighty fleet, many specially designed for heavy listing and towing, many designed for tremendous loads, very long to bring the planet back to its age-old orbit.

In former days we would have found a world wrecked by panic. But this later generation had learned to trust in the powers of the ships they had, and there had been little of the terrible panic that would have affected the world of a generation ago. Then, too, they knew that with the demonstrated power of the long range Dis rays, they could safely convoy a fleet of the great passenger liners to safety.

What helped also was the fact that the human mind cannot grasp the full significance of the fall into the sun. If you were told that the planet you were on was sinking toward the sun, you would be surprised, horrified, and would probably try to make a bargain-buy on real estate, while the other man sold his to get his money out. You would simply fail to comprehend the magnitude of the catastrophe. It has never happened, and never will, the mind says, and we unconsciously believe it. Your neighbor would joke about it to you. Of course many would leave, but most people would stay till the actual physical heat of the sun drove them off. We are constituted that way.

But now the radio barrier was down, and news from the Martian scouts made men hesitate. The remaining cargo ships had settled on Mars and were even now pouring out their strange crews. But they were not building cargo ships. Every one of the worker machines were kept in action constructing duplicates of themselves as rapidly as possible. Already a great number of them had been made--over seven hundred of the machines it was estimated--and now these were engaged in similar work. The number grew in a steady geometrical series.

But the scouts were driven away by the torpedo-ships. Then there was no news of the operations until nightfall permitted the scouts to creep up and install the usual floating vision machines.