The Planet Mappers by E. Everett Evans (short books for teens .TXT) 📖

to conserve their breath after that for running and climbing. Once Jon broke the silence. "Turn your oxygen a little higher, Jak," he said as he twisted the small lever at his own shoulder to increase the flow of the strength-giving energy.

They were panting and winded by the time they reached the top of the hill. But they disregarded fatigue in the face of their mother's probable danger—or their father's.

Jon looked quickly to one side and then the other. As Jak topped the ridge he saw his brother run some twenty feet or so to where he had spotted a fairly smooth downward slope. Down this the younger boy launched himself feet first, sliding on his suit's back. Jak instantly realized the reason, and threw himself after his brother.

In less than a tenth of the time it would have taken them to climb down, the boys were at the foot of the hill. They struggled to their feet and started off toward the ship. Both were again shaken and sorely bruised from their rough slide, but they trotted on. Mother had called—nothing else mattered.

As they came closer to the ship they saw her reason for summoning them.

All about the outer lockdoor were those strange crystalline structures, growing swiftly. As the two boys came still closer, they could see that streamers of the crystals had already reached the lower edge and were trying to force their way through the almost imperceptible crack.

"They'll never get ... through there," Jon panted as he raced the last few feet.

"Don't see ... how they can ... but watch 'em." Jak waded into the alien, growing things. His gloved fists smashed right and left as he spoke. Jon was already doing the same.

But whether these crystal-beings were of a different type from those that Jak had broken in the distant valley, or just what was the reason, the boys now found it more difficult to break these crystals down.

"These aren't ... like those ... back there." Jon had now seen that these crystals did not always grow in pyramidal shape.

"No, they grow ... new crystals ... wherever needed." Jak had been concentrating on the tendrils, or chains of crystals that were reaching, always reaching, toward the lockdoor, while Jon had been trying to break the bases of the pyramids from which these arms sprang.

Although the crystals were still fairly easy to break—especially the tentacles, which were only a thin string—new ones replaced them so swiftly, and their numbers increased so constantly, that it seemed almost a losing battle.

"These're growing lots faster than the others." Jon gritted his teeth as he now tried crushing the bases with his heavy metallic boots, hoping thus to make it harder for the crystal-beings to reach the door.

For minutes the two boys fought in desperation; then Jon grunted in disgust at his thoughtlessness, and yanked out his flame-gun. "Never thought of this," he yelled as he trained it on the crystal-beings. The terrifically hot flame washed off them in coruscating showers—but did no damage.

"Try bullets," Jak unlimbered his gun from his back, and started firing it into the base of the crystals nearest the lockdoor.

The heavy bullets shattered the crystals easily, and soon the boys could begin to see that they were clearing the way.

"You keep firing while I open the door and climb in," Jon yelled. "Then you climb in while I'm going to the control room and I'll lift ship."

"Right," Jak replied and fired even faster as Jon touched the outer mechanism-stud that opened the lock.

Hardly had it begun opening, however, than they heard the sound of another gun being fired through the opening. They looked up in surprise and saw it was their mother, shooting a shotgun. Jon scrambled up into the lock.

"Good work, Mom, but get back in. I'm lifting ship."

He dashed through the inner doorway and into the control room. He threw the switch and Star Rover shuddered as its tubes roared into life. Jon punched on the intercom visiplate that scanned the interior of the lock, and saw his mother pulling Jak into the ship, then closing the outer door. Quickly Jon put the ship into a slow cruising orbit and switched on the auto-pilot. Remembering the open doors and the bitter outside cold, he glanced to see that the automatic heaters were taking care of the inside temperature, then ran back toward the lock.

There he found his brother desperately trying to warm their mother's unsuited body, now growing blue from that terrible cold.

"Help me carry her into bed." Jak rose and grasped her arms, but Jon pushed him aside. Stooping, he picked her up bodily. He ran, staggering a bit, with her into the bunkroom. Jak was right behind, and pulled some extra blankets from a drawer. Then, while he was piling covers about her, Jon dashed into the galley.

He drew hot water from the tap and quickly made a cupful of instant tea, then ran back with it to the bunkroom.

Some minutes later they saw with satisfaction that their mother's color was growing more natural, and her body tremors were slowing from the combined warmth of the extra blankets and hot drink. Only then did the boys stop to help each other out of their suits.

"Thanks for the help, Mother, but don't you know enough to wear a suit in weather as cold as this?" Jak's worry made his voice sharp.

"Yes, who's always fussing about us being careful?" Jon added. "Then pull a stunt like this."

Their mother looked up at them, and the old impish grin they had seen so seldom of late came onto her face.

"You've got me, Chums," she drawled. "From now on I reckon I'll keep my big mouth shut."

Jon howled, and Jak added in the same sort of drawl, "Well, now, I wouldn't go for to say it was 'big,'" and ducked as she slapped out at him.

Soon the two boys sobered down. "We'd better go examine the lock and make sure no crystals got in," Jak said.

"Yow, I forgot about that!" Jon sprang forward. "We sure don't want any of them in or on the ship."

9

Despite Jon's desire to get away from this unfriendly world that bore his name, he was careful to see that the signal-marker was set out and functioning, and that the ship's log contained as complete a record of the resources and data on the planet as was required by the Terran Colonial Board. The same was true of Four's four moons. Jak checked all the work, nor did they leave Four until both boys were satisfied it was complete. Their mother was a great help in taking the numerous photographs needed, having become quite competent in handling the cameras. She was so relieved at the steady progress of her husband's convalescence that she put extra enthusiasm into her photography. The family still felt that Mr. Carver should be kept as quiet as possible and away from any mental strain in connection with the ship and the planet mapping and, in his weakness, he seemed content to leave it that way for the time being. He asked few questions and accepted the reassuring answers contentedly.

Nor, even though Jon wished to get back to friendly Two as soon as he could, did he forget they still had to visit Planet Five, and scout and record that.

So, as soon as they were completely done on Four, he lost no time setting course for Five. Once on the way, he announced his names for the four moons of Four, and now it was Jak's turn to scoff.

"Well, if you can name yours after flowers, I don't see why you've got any kick coming because I name mine after fish," Jon asserted. "I leave it to you, Mom—aren't Tuna, Betta, Sturgeon and Porpoise nice names?"

"I think they are fine, just as I think Zinnia and Begonia are aptly named," she said diplomatically.

The two boys made faces at each other, then Jon turned back to his computations. "I'm not as good at figuring these things out as Pop is, but I think Five is about a half billion miles from the sun. It's almost three hundred and fifty million miles from here, since it's further around the sun. But we'll cut across on a direct route."

To his surprise, Jak came up and clapped him on the shoulder. "You're doing a grand job of astrogating, Chubby. I'm really proud of you." His voice was sincere and appreciative.

"Yes," their mother came over and kissed Jon, rumpling his hair affectionately. "I've been unexpectedly relieved that you've managed to get us to each world so surely and to land us so gently. Though maybe I shouldn't have been so surprised, at that." She laughed gaily as her younger son flushed from this unexpected praise.

"Aw, you guys are just saying that because I'm so wonderful." Jon tried to joke, but they could tell how deeply he felt their compliments.

A day later, when Jon announced they were approaching this outermost planet, the other two joined him in the control room, and all were soon deeply engrossed in the sight revealed to them in their visiplates.

An hour or so later Jon was examining their spectro-analyzer, when he let out a yelp of excitement. "Hey, that fuel-stuff's showing up. It must've come from Five." And a moment later, "Listen to 'Annie' rattle. It sure is there—but plenty."

They clustered about him, and even though they could not tell anything from the lines on the spectrograph that he pointed out, they could hear the machine chattering, and they grew excited from his exultation.

"Miners can use the same type of automatics they use on Pluto to get it, can't they?" Jak asked.

"I'd imagine so, although I really don't know anything about it. However, if we find we can use it, there's where they can get it, and that's the important thing."

Their plates again showed only the blinding whiteness of ice they knew was frozen carbon dioxide rather than frozen water or snow. For even more than on Four, there could be no water here, even in its most frozen form.

They cruised about above the surface, watching their instruments to find and record any metallic ore deposits, especially the new one. The terrain was so forbidding, so desolate, that even the irrepressible Jon felt no desire to land on it, or to go outside.

Again their mother took most of the needed photographs, while the boys recorded all the other data of geography, size and conditions generally. Finally, Jon set the ship down on a fairly level plateau close to what they figured was the equator.

"Well, here we are and that's all I care about," Jon announced with a shiver. "We'll use the distant hands to put out the marker. Then we'll see if we can find the location of that fuel deposit."

Jak agreed. "I wouldn't go out there for a million credits." He shuddered as he looked out the port while the others crowded about to view that forbidding scene. "Maybe we should, but I sure wouldn't get any fun out of it."

"Doubt if our suits would be able to keep us warm, even with the heaters at max."

"No," their mother said sharply, although they could detect the relief in her voice that they had already made the decision. "This is one time I would have set my foot down, and not allowed it. This place gives me the creeps."

While Jon was making up the tape, Jak carried a signal-sender into the lock and placed it beneath those "distant hands." Jon came in and installed the tape, then started the mechanism running.

They returned to the control room, and Jak, whistling unmelodiously between his teeth, operated the controls that opened the outer door, then used the lifting servo-mechanism to set the signal-sender outside on the icy ground. When the outer door was closed, he nodded to Jon and the latter lifted the ship again.

"I'm going up a couple of miles, then circle about to look for deposits of that fuel metal. Meanwhile, as we go we can get the rest of our dope, and then scoot out of here."

Jak again took his place at the recorders, while his mother was at the cameras. Jon set the ship into a quartering circle, and when he had located the direction in which the analyzer showed the strongest indications of the enigmatic metal, swung into that course.

They had gone less than five hundred miles when they noticed a reddish glow in the distance. As they came closer, they saw that ahead and below was a terrific, whirling mass of colored gas.

"Wow, look at that storm!" Jak yelled. But he could not help adding, "Did you ever see anything more beautiful?"

"Better get well above it, hadn't you?" Mrs. Carver asked anxiously. "It looks dangerous."

"I'm sure not going through it." Jon was already lifting