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"What about the Earth's axis of rotation?" queried Giordino. "Would that change?"
Friend shook his head. "Earth's tilt of twenty-three point four degrees would remain constant. The equator would also remain constant. Only the crust above the fluid core would move."
Sandecker said, "If we could get back to the comet for a moment, it's time for you to answer Dirk's question. Were the Amenes and the Wolf family right in predicting a cataclysmic collision with the twin of the comet that struck earth in seven thousand B.C.?"
"May I have another cup of coffee?" Friend asked.
"Certainly," said Loren, pouring from the pot on the center table.
Friend took a few sips and set the cup down. "Now, then, before I answer your question, Admiral, I'd like to describe briefly the new Asteroid and Comet Attack Alert System, which came online just last year. A number of telescope facilities and specially designed instruments have been set up in different areas of the world for the express purpose of discovering asteroids and comets whose orbits approach Earth. Already, astronomers man
ning the facilities have discovered over forty asteroids that will come unpleasantly close to Earth at some point within its orbit. But detailed calculations reveal that they will all miss by a comfortable margin in the years ahead."
"Have they known about the approach of the second comet," said Loren in dismay, "and suppressed any warning of the threat?"
"No," said Friend. "Though the astronomers agreed to keep news of such possible encounters secret for forty-eight hours, until computer projections could definitely say a collision was imminent. Only when they are certain a collision is imminent would news of the discovery be made public."
"So what you are saying--" said Yaeger.
"Is that there is no emergency."
Pitt looked at Friend. "Come again."
"The event in seven thousand B.C.," explained Friend, "was a million-to-one chance occurrence. The comet that struck Earth, and the comet that arrived a few days later and missed, were not twins. They were separate objects in different orbits that happened to cross paths with Earth at almost the same time.
An incredible coincidence, nothing more."
"How soon is the second comet due to return?" Pitt inquired warily.
Friend thought a moment, then said, "Our best guess is that it will fly by no closer than eight hundred thousand miles from us-- in another ten thousand years."
There came several moments of stunned silence, as perplexity flooded the minds of the people seated around Dr. Friend. Pitt swore softly under his breath. He stared steadily at Friend, as if attempting to read something in the astronomer's eyes, an uncertainty maybe, but there was none.
"The comet--" he began.
"Its name is Baldwin, after the amateur astronomer who rediscovered it," Friend interrupted.
"You say the Murphy comet and the second comet that the Amenes recorded are one and the same?"
Friend nodded vigorously. "No doubt about it. Calculations confirm that its orbit coincided with the comet that caused the cataclysm of seven thousand B.C."
Pitt glanced at Sandecker and Pat, then back to Friend. "There can be no mistake?"
Friend shrugged. "A margin of error of perhaps two hundred years, but certainly no more. The only other large object to enter Earth's atmosphere in recorded history was the one that flattened those eight hundred square miles in Siberia. Only now are astronomers beginning to believe that, instead of a colossal impact, it was actually a near miss."
"Surely the Wolfs must have had access to the same data," said Loren, looking bewildered. "It doesn't make sense for them to liquidate every asset of the family after having spent billions of dollars building a fleet of ships to survive a cataclysm they know is not about to happen."
"We all agree with you," said Sandecker. "It may simply be that the Wolf family is nothing more than a bunch of fruitcakes."
"Not only the family," said Giordino, "but two hundred and seventy-five thousand other people who work for them and look forward to the voyage to nowhere."
"That doesn't sound like an insignificant cult of crazies to me," said Loren.
"Very true," Pitt agreed. "When Al and I infiltrated the supership, we found a dedicated fanaticism with surviving the deluge."
"I reached the same conclusion," added Pat. "The conversations I overheard regarding the coming cataclysm were resolute. There was not the slightest doubt in their minds that disaster would overtake the world and that they had been given the gift of rebuilding a new civilization without the handicaps of the old."
