Suddenly the answer he had been seeking was there. It had come out of nowhere. He tried to trace its root by backtracking through his thoughts-but there was nothing. The pathways up from the deeper levels of his mind had opened for a second, but now were closed. The illusion was exposed. The paradox had gone. Of course nobody had seen it before. Who would think to question a truth that was self-evident, and older than the human race itself?
"Pithead Control calling Dr. V. Hunt. Dr. Hunt, come in, please." The sudden voice in his helmet startled him. He pressed a button in the control panel on his chest.
"Hunt answering," he acknowledged. "I hear you."
"Routine check. You’re five minutes overdue to report. Is everything okay?"
"Sorry, didn’t notice the time. Yes, everything’s okay… very okay. I’m coming back now."
"Thank you." The voice cut off with a click.
Had he been gone that long? He realized that he was cold. The icy fingers of the Ganymedean night were beginning to feel their way inside his suit. He wound his heating control up a turn and flexed his arms. Before he turned, he looked up once more for a final glimpse of the giant planet. For some strange reason it seemed to be smiling.
"Thanks, pal," he murmured with a wink. "Maybe I’ll be able to do something for you someday."
With that he began moving down from the ridge, and rapidly faded into the sea of cloud.
Chapter Twenty-Three
A group of about thirty people, mainly scientists, engineers, and UNSA executives, filed into the conference theater in the Navcomms Headquarters building. The room was arranged in ascending tiers of seats that faced a large blank screen at the far end from the double doors. Caldwell was standing on a raised platform in front of the screen, watching as the various groups and individuals found seats. Soon everybody was settled and an usher at the rear signaled that the corridor outside was empty. Caldwell nodded in acknowledgment, raised his hand for silence, and stepped a pace forward to the microphone in front of him.
"Your attention, please, ladies and gentlemen… Could we have quiet, please…" The baritone voice boomed out of the loudspeakers around the walls. The murmurs subsided.
"Thank you all for coming on such short notice," he resumed. "All of you have been engaged for some time now in some aspect or other of the Lunarian problem. Ever since this thing first started, there have been more than a few arguments and differences of opinion, as you all know. Taking all things into consideration, however, we haven’t done too badly. We started out with a body and a few scraps of paper, and from them we reconstructed a whole world. But there are still some fundamental questions that have remained unanswered right up to this day. I’m sure there’s no need for me to recap them for the benefit of anyone here." He paused. "At last, it appears, we may have answers to those questions. The new developments that cause me to say this are so unexpected that I feel it appropriate to call you all together to let you see for yourselves what I saw for the first time only a few hours ago." He waited again and allowed the mood of the gathering to move from one suited to preliminary remarks to something more in tune with the serious business about to begin.
"As you all know, a group of scientists left us many months ago with the Jupiter Five Mission to investigate the discoveries on Ganymede. Among that group was Vic Hunt. This morning we received his latest report on what’s going on. We are about to replay the recording for you now. I think you will find it interesting."
Caldwell glanced toward the projection window at the back of the room and raised his hand. The lights began to fade. He stepped down from the platform and took his seat in the front row. Darkness reigned briefly. Then the screen illuminated to show a file header and reference frame in standard UNSA format. The header persisted for a few seconds, then disappeared to be replaced by the image of Hunt, facing the camera across a desktop.
"Navcomms Special Investigation to Ganymede, V. Hunt reporting, 20 November 2029, Earth Standard Time," he announced. "Subject of transmission: A Hypothesis Concerning Lunarian Origins. What follows is not claimed to be rigorously proven theory at this stage. The object is to present an account of a possible sequence of events which, for the first time, explains adequately the origins of the Lunarians, and is also consistent with all the facts currently in our possession." Hunt paused to consult some notes on the desk before him. In the conference theater the silence was absolute.
Hunt looked back up and out of the screen. "Up until now I’ve tended not to accept any particular one of the ideas in circulation in preference to the rest, primarily because I haven’t been sufficiently convinced that any of them, as stated, accounted adequately for everything that we had reason to believe was true. That situation has changed. I have now come to believe that one explanation exists which is capable of supporting all the evidence. That explanation is as follows:
"The Solar System was formed originally with nine planets, which included Minerva and extended out as far as Neptune. Akin to the inner planets and located beyond Mars, Minerva resembled Earth in many ways. It was similar in size and density and was composed of a mix of similar elements. It cooled and developed an atmosphere, a hydrosphere, and a surface composition." Hunt paused for a second. "This has been one source of difficulty-reconciling surface conditions at this distance from the Sun with the existence of life as we know it. For proof that these factors can indeed be reconciled, refer to Professor Fuller’s work at London University during the last few months." A caption appeared on the lower portion of the screen, giving details of the titles and access codes of Fuller’s papers on the subject.
"Briefly, Fuller has produced a model of the equilibrium states of various atmospheric gases and volcanically introduced water vapor, that is consistent with known data. To sustain the levels of free atmospheric carbon dioxide and water vapor, and the existence of large amounts of water in a liquid state, the model requires a very high level of volcanic activity on the planet, at least in its earlier history. That this requirement was evidently met could suggest that relative to its size, the crust of Minerva was exceptionally thin, and the structure of this crust unstable. This is significant, as becomes clear later. Fuller’s model also ties in with the latest information from the Asteroid surveys. The thin crust could be the result of relatively rapid surface cooling caused by the vast distance from the Sun, but with the internal molten condition being prolonged by heat sources below the surface. The Asteroid missions report many samples being tested that are rich in radioactive heat-producing substances.
"So, Minerva cooled to a mean surface temperature somewhat colder than Earth’s but not as cold as you might think. With cooling came the formation of increasingly more complex molecules, and eventually life emerged. With life came diversification, followed by competition, followed by selection-in other words, evolution. After many millions of years, evolution culminated in a race of intelligent beings who became dominant on the planet These were the beings we have christened the Ganymeans.
"The Ganymeans developed an advanced technological civilization. Then, approximately twenty-five million years ago, they had reached a stage which we estimate to be about a hundred years ahead of our own. This estimate is based on the design of the Ganymean ship we’ve been looking at here, and the equipment found inside it.
"Sometime around this period, a major crisis developed on Minerva. Something upset the delicate mechanism controlling the balance between the amount of carbon dioxide locked up in the rocks and that in the free state; the amount in the atmosphere began to rise. The reasons for this are speculative. One possibility is that something triggered the tendency toward high volcanic activity inherent in Minerva’s structure-maybe natural causes, maybe something the Ganymeans did. Another possibility is that the Ganymeans were attempting an ambitious program of climate control and the whole thing went wrong in a big way. At present we really don’t have a good answer to this part. However, our investigations of the Ganymeans have hardly begun yet. There are still years of work to be done on the contents of the ship alone, and I’m pretty certain that there’s a lot more waiting to be discovered down under the ice here.