"I've seen what it can do. It can do plenty."
"It can, in certain ways. It can soak up all types of energy."
"Like the energy of a blaster bolt. You're not going to kick about that, are you?"
"No, I admit I'd be immune to blasters. The shield would soak up potential energy, too, if the mass of a body weren't too great or too small. For instance, a knife or an ordinary bullet couldn't penetrate, though the bullet might knock me down. A good sledge hammer would swing right through the shield, though, and even if it didn't its momentum would crush me. And what's more, molecules of air can go through the shield as if it weren't there because they're too small to be handled. I'm telling you this so that you'll understand that if I were wearing the shield and Dingo had broken my face-plate when we were both tangled up in space, I would have died anyway. The shield wouldn't have prevented the air in my suit from scattering away in a split second."
"If you had used it in the first place, Lucky, you wouldn't have had any trouble. Don't I remember when you used it on Mars?" Bigman chuckled at the reminiscence. "It glimmered all over you, smoky-like, only luminous, so you could just be seen in a haze. All except your face anyway. That was just a sheet of white light."
"Yes," said Lucky dryly, "I would have scared them. They would have hit at me with blasters and I wouldn't have been hurt. So they would have all high-tailed it off the Atlas, gone off about ten miles, and blasted the ship. I would have been stone dead. Don't forget that the shield is only a shield. It doesn't give me any offensive powers whatever."
"Aren't you ever going to use it again?" asked Bigman.
"When it's necessary. Not till then. If I use it too much, the effect would be lost. Its weaknesses would be found out and I would be just a target for anyone I came up against."
Lucky studied the instruments. Calmly he said, "Ready for acceleration again."
Bigman said, "Hey-"
Then, as he was pushed back into his seat, he found himself fighting for breath and could say nothing more.
The redness was rising to his eyes and he could feel the skin drawing backward as though it were trying to peel off his bones.
This time the Shooting Starrs acceleration was on full.
It lasted fifteen minutes. Toward the end Bigman was scarcely conscious. Then it relaxed and life crept back.
Lucky was shaking his head and panting for breath.
Bigman said, "Hey, that wasn't funny."
"I know," said Lucky.
"What's the idea? Weren't we going fast enough?"
"Not quite. But it's all right now. We've shaken them."
"Shaken whom?"
"Whoever was following us. We were being followed, Bigman, from the minute you stepped foot on the deck of the old Shooter. Look at the Ergometer."
Bigman did so. The Ergometer resembled the one on the Atlas in name only. The one on the Atlas had been a primitive model designed to pick up motor radiation for the purpose of releasing the lifeboats. That had been its only purpose. The Ergometer on the Shooting Starr could pick up the radiation pattern of a hyperatomic motor on ships no larger than an ordinary lifeboat and do it at a distance of better than two million miles.
Even now the inked line on the graphed paper jiggled very faintly, but periodically.
"That isn't anything," said Bigman.
"It was, a while ago. Look for yourself." Lucky unreeled the cylinder of paper that had already passed the needle. The jigglings grew deeper, more characteristic. "See that, Bigman?"
"It could be any ship. It could be a Ceres freighter."
"No. For one thing, it tried to follow us and did a good job of it, too, which means it had a pretty good Ergom-eter of its own. Besides that, did you ever see an energy pattern like this?"
"Not exactly like this, Lucky."
"I did, you see, in the case of the ship that boarded the Atlas. This Ergometer does a much better job of pattern analysis, but the resemblance is definite. The motor of the ship that's following us is of Sirian design."
"You mean it's Anton's ship."
"That or a similar one. It doesn't matter. We've lost them."
"At the moment," said Lucky, "we're right where the hermit's rock should be, plus or minus, say, a hundred thousand miles."
"Nothing's here," said Bigman.
"That's right. The gravities register no asteroidal mass anywhere near us. We're in what the astronomers call a forbidden zone."
"Uh-huh," said Bigman wisely, "I see."
Lucky smiled. There was nothing to see. A forbidden zone in the asteroid belt looked no different from a portion of the belt that was thickly strewn with rocks, at least not to the naked eye. Unless an asteroid happened to be within a hundred miles or so, the view was the same. Stars or things that looked like stars filled the heavens. If some of them were asteroids and not stars, there was no way of telling the difference short of watching intently for several hours to see which "stars" changed relative position, or using a telescope to begin with.
Bigman said, "Well, what do we do?"
"Look around the neighborhood. It may take us a few days."
The path of the Shooting Starr grew erratic. It headed outward from the Sun, away from the forbidden zone and into the nearest constellation of asteroids. The gravities jumped their needles at the pull of distant mass.
Tiny world after tiny world slid into the field of the visiplate, was allowed to remain there while it rotated, and was then permitted to slip out. The Shooting Starr's velocity had decelerated to a relative crawl, but the miles still passed by the hundreds of thousands and into the millions. The hours passed. A dozen asteroids came and went.
"You better eat," said Bigman.
But Lucky contented himself with sandwiches and catnaps while he and Bigman watched visiplate, gravities and Ergometer in turn.
Then, with an asteroid in view, Lucky said in a strained voice, "I'm going down."
Bigman was caught by surprise. "Is that the asteroid?" He looked at its angularity. "Do you recognize it?"
"I think I do, Bigman. In any case, it's going to be investigated."
It took half an hour to manipulate the ship into the asteroid's shadow.
"Keep it here,".Lucky said. "Someone's got to stay with the ship and you're the one. Don't forget it. It can be detected, but if it's in the shadow, with the lights out and the motors at minimum, it will make it as hard as possible for them. According to the Ergometer, there's no ship in space near us now. Right?"
"Right!"
"The most important thing to remember is this: Don't come down after me for any reason. When I'm through, I'll come up to you. If I'm not back in twelve hours and haven't called, either, back you go to Ceres with a report, after taking photographs of this asteroid at every angle."
Bigman's face grew sullenly stubborn. "No."
"This is the report," said Lucky calmly. He withdrew a personal capsule from an inner pocket. "This capsule is keyed to Dr. Conway. He's the only one who can open it. He's got to get the information, regardless of me. Do you understand?"
"What's in it?" asked Bigman, making no move to take it.
"Just theories, I'm afraid. I've told no one of them, because I've come out here to try to get facts to back them up. If I can't make it, the theories, at least, must get through. Conway may believe them and he may get the government to act upon them."