Micheals found his mind wandering again, to the lightning bolts of Zeus.

That was what they needed. Or the strength of Hercules.

Or--

He sat up suddenly. "Gentlemen, I believe I can offer you a possible alternative, although it's a very dim one."

They stared at him.

"Have you ever heard of Antaeus?" he asked.

The more the leech ate, the faster it grew and the hungrier it became.

Although its birth was forgotten, it did remember a long way back. It had eaten a planet in that ancient past. Grown tremendous, ravenous, it had made the journey to a nearby star and eaten that, replenishing the cells converted into energy for the trip. But then there was no more food, and the next star was an enormous distance away.

It set out on the journey, but long before it reached the food, its energy ran out. Ma.s.s, converted back to energy to make the trip, was used up. It shrank.

Finally, all the energy was gone. It was a spore, drifting aimlessly, lifelessly, in s.p.a.ce.

That was the first time. Or was it? It thought it could remember back to a distant, misty time when the Universe was evenly covered with stars.

It had eaten through them, cutting away whole sections, growing, swelling. And the stars had swung off in terror, forming galaxies and constellations.

Or was that a dream?

Methodically, it fed on the Earth, wondering where the rich food was.

And then it was back again, but this time above the leech.

It waited, but the tantalizing food remained out of reach. It was able to sense how rich and pure the food was.

Why didn't it fall?

For a long time the leech waited, but the food stayed out of reach. At last, it lifted and followed.

The food retreated, up, up from the surface of the planet. The leech went after as quickly as its bulk would allow.

The rich food fled out, into s.p.a.ce, and the leech followed. Beyond, it could sense an even richer source.

The hot, wonderful food of a sun!

O'Donnell served champagne for the scientists in the control room.

Official dinners would follow, but this was the victory celebration.

"A toast," the general said, standing. The men raised their gla.s.ses. The only man not drinking was a lieutenant, sitting in front of the control board that guided the drone s.p.a.ceship.

"To Micheals, for thinking of--what was it again, Micheals?"

"Antaeus." Micheals had been drinking champagne steadily, but he didn't feel elated. Antaeus, born of Ge, the Earth, and Poseidon, the Sea. The invincible wrestler. Each time Hercules threw him to the ground, he arose refreshed.

Until Hercules held him in the air.

Moriarty was muttering to himself, figuring with slide rule, pencil and paper. Allenson was drinking, but he didn't look too happy about it.

"Come on, you birds of evil omen," O'Donnell said, pouring more champagne. "Figure it out later. Right now, drink." He turned to the operator. "How's it going?"

Micheals' a.n.a.logy had been applied to a s.p.a.ceship. The ship, operated by remote control, was filled with pure radioactives. It hovered over the leech until, rising to the bait, it had followed. Antaeus had left his mother, the Earth, and was losing his strength in the air. The operator was allowing the s.p.a.ceship to run fast enough to keep out of the leech's grasp, but close enough to keep it coming.

The s.p.a.ceship and the leech were on a collision course with the Sun.

"Fine, sir," the operator said. "It's inside the orbit of Mercury now."

"Men," the general said, "I swore to destroy that thing. This isn't exactly the way I wanted to do it. I figured on a more personal way. But the important thing is the destruction. You will all witness it.

Destruction is at times a sacred mission. This is such a time. Men, I feel wonderful."

"Turn the s.p.a.ceship!" It was Moriarty who had spoken. His face was white. "Turn the d.a.m.ned thing!"

He shoved his figures at them.

They were easy to read. The growth-rate of the leech. The energy-consumption rate, estimated. Its speed in s.p.a.ce, a constant. The energy it would receive from the Sun as it approached, an exponential curve. Its energy-absorption rate, figured in terms of growth, expressed as a hyped-up discontinuous progression.

The result--

"It'll consume the Sun," Moriarty said, very quietly.

The control room turned into a bedlam. Six of them tried to explain it to O'Donnell at the same time. Then Moriarty tried, and finally Allenson.

"Its rate of growth is so great and its speed so slow--and it will get so much energy--that the leech will be able to consume the Sun by the time it gets there. Or, at least, to live off it until it can consume it."

O'Donnell didn't bother to understand. He turned to the operator.

"Turn it," he said.

They all hovered over the radar screen, waiting.

The food turned out of the leech's path and streaked away. Ahead was a tremendous source, but still a long way off. The leech hesitated.

Its cells, recklessly expending energy, shouted for a decision. The food slowed, tantalizingly near.

The closer source or the greater?

The leech's body wanted food _now_.

It started after it, away from the Sun.

The Sun would come next.