Funarelli floated upward with a sigh and said, "Why can't they find the black hole, the idiots?"

"You mean like we did? There's no other way. It's not doing enough."

Funarelli said, "I still hurt, even with no gravity to fight…Oh well, if it keeps on hurting like this, it won't matter so much when it comes to pill-taking time…Is there any way we can make that black hole do more than it's doing?"

Estes said grimly, "If one of those bits of gravel should take it into its head to drop into the hole, a burst of X rays would shoot out."

"Would they detect that on Vesta?"

Estes shook his head. "I doubt it. They're not looking for such a thing. They'd be sure to detect it on Earth, though. Some of the space stations keep the sky under constant surveillance for radiation changes. They'd pick up astonishingly small bursts."

"All right, Ben, reaching Earth would be just as well. They'd send a message to Vesta to investigate. It would take the X rays about fifteen minutes to get to Earth and then it would take fifteen minutes for radio waves to get to Vesta. "

"And how about the time between? The receivers may automatically record a burst of X rays from such and such a direction, but who's to say where it's from? It could be from a distant galaxy that happens to lie in this particular direction. Some technician will notice the bump in the recording and will watch for more bursts in the same place and there won't be any and it will be crossed off as unimportant. Besides, it won't happen, Harv. There must have been lots of X rays when the black hole broke up this asteroid with its tidal effect, but that may have been thousands of years ago when no one was watching. Now what's left of these fragments must have fairly stable orbits."

"If we had our rockets-"

"Let me guess. We could drive our ship into the black hole. Use our deaths to send a message. That wouldn't do any good either. It would still be one pulse from anywhere."

Funarelli said indignantly, "I wasn't thinking of that. I'm not in the market for heroic death. I meant, we've got three engines. If we could rig them on to three pretty large size rocks and send each one into the hole, there would be three bursts of X rays and if we did them a day apart, the source would move detectably against the stars. That would be interesting, wouldn't it? The technicians would pick that up at once, wouldn't they?"

"Maybe, and maybe not. Besides, we don't have any rocketry left and couldn't put them on the rocks if we-" Estes fell silent. Then he said in an altered voice, "I wonder if our space suits are intact."

"Our suit radios," said Funarelli excitedly.

"Hell, they don't reach out more than a few kilometers," said Estes. "I'm thinking of something else. I'm thinking of going out there." He opened the suit locker. "They seem all right."

"Why do you want to go out?"

"We may not have any rockets, but we still have muscle power. At least I have. Do you think you can throw a rock?"

Funarelli made a throwing gesture, or the beginning of one, and a look of agony came over his face. "Can I jump to the Sun?" he said.

"I'll go out and throw some…The suit seems to check out. Maybe I can throw some into the hole…I hope the air lock operates."

"Can we spare the air?" said Funarelli anxiously.

"Will it matter in two weeks?" said Estes wearily.

Every astro-miner has to get outside the ship occasionally -to carry out some repair, to bring in some chunk of matter in the vicinity. Ordinarily, it's an exciting time. In any case, it's a change.

Estes felt little excitement, only a vast anxiety. His notion was so damned primitive, he felt foolish to have it. It was bad enough dying without having to die a damn fool.

He found himself in the black of space, with the glittering stars he had seen a hundred times before. Now, though, in the faint reflection of the small and distant Sun, there was the dim glow of hundreds of bits of rock that must once have been part of an asteroid and that now formed a tiny Saturn's ring about a black hole. The rocks seemed almost motionless, as all drifted along with the ship.

Estes judged the direction of wheel of the stars and knew that ship and rocks were moving slowly in the other direction. If he could throw a rock in the direction of the star motion, he would neutralize some of the rock's velocity relative to the black hole. If he neutralized not enough of the velocity, or too much, the rock would drop toward the hole, skim about it, and come back to the point it had left. If he neutralized just enough, it would come close enough to be powdered by the tidal effect. The grains of powder, in their motions, would slow each other and spiral into the hole, releasing X rays as they did so.

Estes used his miner's net of tantalum steel to gather rocks, choosing them fist size. He was thankful that modern suits allowed complete freedom of motion and were not the virtual coffins they had been when the first astronauts, over a century ago, had reached the Moon.

Once he had enough rocks, he threw one, and he could see it glimmer and fade in the sunlight as it dropped toward the hole. He waited and nothing happened. He didn't know how long it might take to fall into the black hole-if it fell in at all, that is-but he counted six hundred to himself and threw again.

Over and over he did so, with a terrible patience born of searching for an alternative to death, and finally there was a sudden blaze in the direction of the black hole. Visible light and, he knew, a burst of higher-energy radiation as far as X rays at least.

He had to stop to gather more rocks, and then he got the range. He was hitting it almost every time. He oriented himself so that the soft glimmer of the black hole would be seen just above the midportion of the ship. That was one relationship that didn't change as the ship circled and rolled on an axis-or changed least.

Even allowing for his care, however, it seemed to him he was making too many strikes. The black hole, he thought, was more massive than he knew and would swallow up its prey from a larger distance. That made it more dangerous, but increased their chance of rescue.

He worked his way through the lock and back into the ship. He was bone-weary and his right shoulder hurt him.

Funarelli helped him off with the suit. "That was terrific. You were throwing rocks into the black hole."

Estes nodded. "Yes, and I'm hoping my suit has been stopping the X rays. I'd just as soon not die of radiation poisoning."

"They'll see this back on Earth, won't they?"

"I'm sure they will," said Estes, "but will they pay attention? They'll record it all and wonder about it. But what's going to make them come out here for a closer look? I've got to work out something that will make them come, after I have just a little time to rest."

An hour later, he lifted out another space suit. No time to wait for the recharge of the solar batteries in the first one. He said, "I hope I haven't lost the range."

He was out again, and it had become clear that even allowing a fairly wide spread of velocities and direction, the black hole would suck up the slowing rocks as they moved inward.

Estes gathered as many rocks as he could manage and placed them carefully on an indentation in the hull of the ship. They didn't stay there, but they drifted only exceedingly slowly, and even after Estes had collected all he could, those he had placed there first had spread out no more than billiard balls on a pool table.

Then he threw them, at first tensely, and then with growing confidence, and the black hole flashed-and flashed-and flashed.