They were silent, and the murmuring of machinery filled the cramped room. "How's this?" said McNary. "Wait till we see the other satellite, take a couple of readings on it, and compute the orbit again. We'd have about five minutes to make the calculations. Morgan here can do it in less than that. Then we'd know if we're on a collision course."

Morgan nodded. "We could do it that way." He studied the chart in front of him. "The only thing, those boys on the other satellite will see what we're doing. They'll know we're afraid of a collision. They'll radio it down to Earth, and—you know the Russian mind—we'll lose face."

"That so bad?" asked Kaufman.

Morgan stared at the chart. He answered softly, "Yes, I think it is. The Russians will milk it dry if we make any move to get our satellite out of the way of theirs. We can't do that to our people."

McNary nodded. Kaufman said, "Agree. Just wanted to throw it out. We stay put. We hit, we hit."

The other two looked at Kaufman. The abrupt dismissal of a serious problem was characteristic of the little astronomer; Kaufman wasted no time with second guesses. A decision made was a fact accomplished; it was over.

Morgan glanced at McNary to see how he was taking it. McNary, now, big as he was, was a worrier. He stood ready to change his mind at any time, whenever some new alternative looked better. Only the soundness of his judgment prevented his being putty in any strong hands. He was a meteorologist, and a good one.

"You know," said McNary, "I still can't quite believe it. Two satellites, one pole-to-pole, the other equatorial, both having apogees and perigees of different elevations—yet they wind up on what amounts to a collision course."

Morgan said, "That's what regression will do for you. But we haven't got any time for that; we've got to think this out. Let's see, they'll be coming up from below us at passage. Can we make anything of that?"

There was silence while the three men considered it. Morgan's mind was focussed on the thing that was about to happen; but wisps of memory intruded. Faintly he could hear the waves, smell the bite in the salt sea air. A man who had sailed a thirty-two-foot ketch alone into every corner of the globe never thereafter quite lost the sound of the sea in his ear. And the struggle, the duel, the strain of outguessing the implacable elements, there was a test of a man....