ever found weighed seventy tons. A comet is quite different. It's often called a dirty snowball made up of ice, gas, and rocky dust particles. They usually travel in very long oval orbits on the outer edge of the solar system, and often beyond. Because of gravitational interaction from the sun and planets, a few are diverted and orbit around the sun. When they come close to the sun, the comet's surface ice vaporizes and forms a spectacular elongated cone or tail. It's generally thought that they are leftovers from the formation of the planets. By drilling and then analyzing the composition of the microscopic debris found in and around the Hudson Bay crater, geophysicists discovered tiny particles that they identified as part of the comet that slammed into the earth in seven thousand B.C. Tests revealed no traces of the usual minerals and metals associated with asteroids.'
'So we have impact,' said Sandecker. 'Then what happened?'
'A measureless inverted cone of red-hot rock, steam, dust, and debris was hurled up and above the atmosphere, only to plunge in a fiery rain back down on Earth, igniting uncontrollable forest fires around the world. Huge amounts of sulfur, shock-heated nitrogen, and great doses of fluorides were injected into the atmosphere. The ozone layer would have been destroyed, skies blotted out, as winds of hurricane strength whipped across the land and seas. Our simulation suggests this cloud of debris and smoke lasted no less than fourteen months. This alone would have killed off most of Earth's life and collapsed the food chain.'
'It sounds too horrible for me to imagine,' said Loren quietly.
Friend made a taut smile. 'Lamentably, that's only the opening act. Because Hudson Bay opened into the Atlantic Ocean, waves as high as seven or eight miles were formed that burst across the lowlands. Florida would have been totally inundated, along with most of the islands of the world. Much of Europe and Africa saw waves surging hundreds of miles inland from their shorelines. Because most of Australia's ancient inhabitants lived on or near the coasts, the continent would have suffered a ninety-nine-percent death rate within minutes. Southeast Asia would have been buried under water. Vast multitudes of sea life would have been carried far inland and left to die when the giant waves finally receded. The chemical balance of the oceans was altered. What the upheaval didn't kill in the oceans, the silt, mud, and debris would.
'Shuddering from the comet's impact, massive earthquakes far beyond the top end of the Richter scale forever changed the dimensions of the mountains, plains, and deserts. Then volcanoes around the globe, dormant or active, erupted- molten lava in great sheets as high as a mile stormed over whatever land wasn't submerged. If an astronaut had flown to Mars before the cataclysm and returned two years later, he would not have been able to recognize the world, nor would anyone he knew or loved still be alive. He could very well find himself the only man on Earth.'
Pitt looked at the astronomer. 'You don't paint a very pretty picture.'
'The aftermath was ghastly to behold. Once the deluge waters retreated, boulders of every size and shape were dispersed throughout the landscape, where they still rest today and are a great puzzle to geologists, who otherwise can't explain how they came to be there. Vast deposits of mangled trees, along with the bodies of animals and sea life carried far inland, were heaped in huge deposits. These deposits can still be found in the frozen regions of the world, proving that they were hurled there by a giant cataclysm. Huge bodies of water were trapped, and formed lakes. In one known instance, the land strait that separated the Atlantic Ocean from the valley and rivers of the Mediterranean was swept away and the sea was formed. Old glaciers melted, new ones were formed. Tropical forests began to grow in mild climates that were once lashed by frigid winds and freezing temperatures. The Gobi, Sahara, and Mojave regions, then tropical forests, became dry and arid. The continental shelves that once stood above the water were now drowned. The magnetic poles reversed their polarity. Civilizations that existed were buried as deep as five hundred feet beneath the surface. It might have taken as long as twenty years before the world became completely stable again. The few humans who somehow survived were faced with a very grim existence, and it was a miracle any of them endured to become our ancestors.'
Pat set down her cup. 'The primitive people of the Earth were so badly decimated and fragmented, they kept no record of their activities for thousands of years. Except for the inscriptions by the Amenes, most of which were lost or buried, the only memories of the cataclysm that were passed down came by word of mouth. Only after the early Egyptians, the Sumerians, and the Indus civilization of India reinvented the written language did records and stories of the deluge begin to spread.'
'Who knows what cities,' said Pitt, 'what palaces with their archaeological treasures lie scattered on the deep seafloor or buried under hundreds of feet of silt and rock? Except for the inscriptions left by the Amenes, we have no way of assessing the splendor of the distant past before civilizations began rebuilding themselves.'
Friend had remained silent while each member of the group envisioned the nightmare. He let his eyes rove around the sitting area inside the command truck, curiously observing the expressions of abhorrence in their eyes. Only Pitt's eyes seemed to be composed. It was as if he was contemplating something much different, something far off in the distance.
'And thus ends the cataclysm,' said Sandecker morosely.
Friend slowly shook his head. 'I haven't yet come to the worst part,' he said, his earlier smile gone. 'Only in the past few years have scientists come to realize the major upheavals Earth has experienced in the past, with and without influence by objects from outer space. We know now that a significant impact by a large comet or asteroid has the capability to cause the earth's crust to shift. Charles Hapgood put forth the theory that because it literally floats on an inner molten core, the crust or shell, which is only twenty to forty miles thick, can and has rotated around the core's axis, causing great extremes in climate and the movement of the continents. It's called earth crust displacement, and its consequences can be catastrophic. At first, Hapgood's theory was laughed at by other Earth scientists. Then Albert Einstein focused his intellect on it and ended up agreeing with Hapgood.'
'Sort of like the coating of Teflon around a soccer ball,' suggested Yaeger.
'The same principle,' Friend acknowledged. 'Our computer simulation suggested that the impact exerted enough pressure to move the crust. The result was that some continents, islands, and other landmasses shifted closer to the equator, while others shifted farther away. The movement also caused the North and South Poles to shift from their former positions into warmer climates, unleashing trillions of tons of water that raised the surface of the oceans over almost four hundred feet. To give you an example, before the deluge, a man or woman could have walked from London across the English Channel to France without getting their feet wet.
'In the end, the whole world was rearranged. The North Pole that was in the center of Canada was now far to the north in what is now known as the Arctic Sea. Siberia also shifted north in an incredibly short time span, as evidenced by fruit trees with leaves and woolly mammoths that were found quick-frozen, with vegetation undigested in their stomachs that no longer grew within a thousand miles of that location. Because North America and most of Europe revolved south, the great ice age abruptly ended. Antarctica also shifted south, nearly two thousand miles from the region it had once occupied in the southern sea between the lower portions of South America and Africa.'
'Was Earth's orbit affected?' Yaeger asked.
'No, the orbit remained on its present track around the sun. Nor was the Earth's axis altered. The equator remained where it had been since the beginning. The four seasons came and went as always. Only the face of the globe had changed.'
'That explains a great deal,' said Pitt, 'such as how the Amenes could draw a map of Antarctica without its ice mass.'
'And their city under the ice that the Germans discovered,' said Pat. 'Its climate was habitable before the shift.'
'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 manning
