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Bliss sighed. “You do have this annoying habit of trying to turn everything into a joke, but I know you are under tension and I’ll make allowance for that. Just use the feminine pronoun for Fallom, please.”
“I will.” Trevize hesitated, then, unable to resist, said, “Fallom seems more your surrogate-child every time I see you together. Is it that you want a child and don’t think Janov can give you one?”
Bliss’s eyes opened wide. “He’s not there for children! Do you think I use him as a handy device to help me have a child? It is not time for me to have a child, in any case. And when it is time, it will have to be a Gaian child, something for which Pel doesn’t qualify.”
“You mean Janov will have to be discarded?”
“Not at all. A temporary diversion, only. It might even be brought about by artificial insemination.”
“I presume you can only have a child when Gaia’s decision is that one is necessary; when there is a gap produced by the death of an already-existing Gaian human fragment.”
“That is an unfeeling way of putting it, but it is true enough. Gaia must be well proportioned in all its parts and relationships.”
“As in the case of the Solarians.”
Bliss’s lips pressed together and her face grew a little white. “Not at all. The Solarians produce more than they need and destroy the excess. We produce just what we need and there is never a necessity of destroying—as you replace the dying outer layers of your skin by just enough new growth for renewal and by not one cell more.”
“I see what you mean,” said Trevize. “I hope, by the way, that you are considering Janov’s feelings.”
“In connection with a possible child for me? That has never come up for discussion; nor will it.”
“No, I don’t mean that. —It strikes me you are becoming more and more interested in Fallom. Janov may feel neglected.”
“He’s not neglected, and he is as interested in Fallom as I am. She is another point of mutual involvement that draws us even closer together. Can it be that you are the one who feels neglected?”
“I?” He was genuinely surprised.
“Yes, you. I don’t understand Isolates any more than you understand Gaia, but I have a feeling that you enjoy being the central point of attention on this ship, and you may feel cut out by Fallom.”
“That’s foolish.”
“No more foolish than your suggestion that I am neglecting Pel.”
“Then let’s declare a truce and stop. I’ll try to view Fallom as a girl, and I shall not worry excessively about you being inconsiderate of Janov’s feelings.”
Bliss smiled. “Thank you. All is well, then.”
Trevize turned away, and Bliss then said, “Wait!”
Trevize turned back and said, just a bit wearily, “Yes?”
“It’s quite clear to me, Trevize, that you’re sad and depressed. I am not going to probe your mind, but you might be willing to tell me what’s wrong. Yesterday, you said there was an appropriate planet in this system and you seemed quite pleased. —It’s still there, I hope. The finding hasn’t turned out to be mistaken, has it?”
“There’s an appropriate planet in the system, and it’s still there,” said Trevize.
“Is it the right size?”
Trevize nodded. “Since it’s appropriate, it’s of the right size. And it’s at the right distance from the star as well.”
“Well, then, what’s wrong?”
“We’re close enough now to analyze the atmosphere. It turns out that it has none to speak of.”
“No atmosphere?”
“None to speak of. It’s a nonhabitable planet, and there is no other circling the sun that has even the remotest capacity for habitability. We have come up with zero on this third attempt.”
62.
PELORAT, LOOKING GRAVE, WAS CLEARLY UNWILLING to intrude on Trevize’s unhappy silence. He watched from the door of the pilot-room, apparently hoping that Trevize would initiate a conversation.
Trevize did not. If ever a silence seemed stubborn, his did.
And finally, Pelorat could stand it no longer, and said, in a rather timid way, “What are we doing?”
Trevize looked up, stared at Pelorat for a moment, turned away, and then said, “We’re zeroing in on the planet.”
“But since there’s no atmosphere—”
“The computer says there’s no atmosphere. Till now, it’s always told me what I’ve wanted to hear and I’ve accepted it. Now it has told me something I don’t want to hear, and I’m going to check it. If the computer is ever going to be wrong, this is the time I want it to be wrong.”
“Do you think it’s wrong?”
“No, I don’t.”
“Can you think of any reason that might make it wrong?”
“No, I can’t.”
“Then why are you bothering, Golan?”
And Trevize finally wheeled in his seat to face Pelorat, his face twisted in near-despair, and said, “Don’t you see, Janov, that I can’t think of anything else to do? We drew blanks on the first two worlds as far as Earth’s location is concerned, and now this world is a blank. What do I do now? Wander from world to world, and peer about and say, ‘Pardon me. Where’s Earth?’ Earth has covered its tracks too well. Nowhere has it left any hint. I’m beginning to think that it will see to it that we’re incapable of picking up a hint even if one exists.”
Pelorat nodded, and said, “I’ve been thinking along those lines myself. Do you mind if we discuss it? I know you’re unhappy, old chap, and don’t want to talk, so if you want me to leave you alone, I will.”
“Go ahead, discuss it,” said Trevize, with something that was remarkably like a groan. “What have I got better to do than listen?”
Pelorat said, “That doesn’t sound as though you really want me to talk, but perhaps it will do us good. Please stop me at any time if you decide you can stand it no longer. —It seems to me, Golan, that Earth need not take only passive and negative measures to hide itself. It need not merely wipe out references to itself. Might it not plant false evidence and work actively for obscurity in that fashion?”
“How do you mean?”
“Well, we’ve heard of Earth’s radioactivity in several places, and that sort of thing would be designed to make anyone break off any attempt to locate it. If it were truly radioactive, it would be totally unapproachable. In all likelihood, we would not even be able to set foot on it. Even robot explorers, if we had any, might not survive the radiation. So why look? And if it is not radioactive, it remains inviolate, except for accidental approach, and even then it might have other means of masking itself.”
Trevize managed a smile. “Oddly enough, Janov, that thought has occurred to me. It has even occurred to me that that improbable giant satellite has been invented and planted in the world’s legends. As for the gas giant with the monstrous ring system, that is equally improbable and may be equally planted. It is all designed, perhaps, to have us look for something that doesn’t exist, so that we go right through the correct planetary system, staring at Earth and dismissing it because, in actual fact, it lacks a large satellite or a triple-ringed cousin or a radioactive crust. We don’t recognize it, therefore, and don’t dream we are looking at it. —I imagine worse, too.”
Pelorat looked downcast. “How can there be worse?”
“Easily—when your mind gets sick in the middle of the night and begins searching the vast realm of fantasy for anything that can deepen despair. What if Earth’s ability to hide is ultimate? What if our minds can be clouded? What if we can move right past Earth, with its giant satellite and with its distant ringed gas giant, and never see any of it? What if we have already done so?”
“But if you believe that, why are we—?”
“I don’t say I believe that. I’m talking about mad fancies. We’ll keep on looking.”
Pelorat hesitated, then said, “For how long, Trevize? At some point, surely, we’ll have to give up.” “Never,” said Trevize fiercely. “If I have to spend the rest of my life going from planet to planet and peering about and saying, ‘Please, sir, where’s Earth?’ then that’s what I’ll do. At any time, I can take you and Bliss and even Fallom, if you wish, back to Gaia and then take off on my own.”
“Oh no. You know I won’t leave you, Golan, and neither will Bliss. We’ll go planet-hopping with you, if we must. But why?”
“Because I must find Earth, and because I will. I don’t know how, but I will. —Now, look, I’m trying to reach a position where I can study the sunlit side of the planet without its sun being too close, so just let me be for a while.”
Pelorat fell silent, but did not leave. He continued to watch while Trevize studied the planetary image, more than half in daylight, on the screen. To Pelorat, it seemed featureless, but he knew that Trevize, bound to the computer, saw it under enhanced circumstances.
Trevize whispered, “There’s a haze.”
“Then there must be an atmosphere,” blurted out Pelorat.
“Not necessarily much of one. Not enough to support life, but enough to support a thin wind that will raise dust. It’s a well-known characteristic of planets with thin atmospheres. There may even be small polar ice caps. A little water-ice condensed at the poles, you know. This world is too warm for solid carbon dioxide. —I’ll have to switch to radar-mapping. And if I do that I can work more easily on the nightside.”
“Really?”
“Yes. I should have tried it first, but with a virtually airless and, therefore, cloudless planet, the attempt with visible light seems so natural.”
Trevize was silent for a long time, while the viewscreen grew fuzzy with radar-reflections that produced almost the abstraction of a planet, something that an artist of the Cleonian period might have produced. Then he said, “Well—” emphatically, holding the sound for a while, and was silent again.
Pelorat said, at last, “What’s the ‘well’ about?”
Trevize looked at him briefly. “No craters that I can see.”
“No craters? Is that good?”
“Totally unexpected,” said Trevize. His face broke into a grin, “And very good. In fact, possibly magnificent.”
63.
FALLOM REMAINED WITH HER NOSE PRESSED against the ship’s porthole, where a small segment of the Universe was visible in the precise form in which the eye saw it, without computer enlargement or enhancement.
Bliss, who had been trying to explain it all, sighed and said in a low voice to Pelorat, “I don’t know how much she understands, Pel dear. To her, her father’s mansion and a small section of the estate it stood upon was all the Universe. I don’t think she was ever out at night, or ever saw the stars.”
“Do you really think so?”
“I really do. I didn’t dare show her any part of it until she had enough vocabulary to understand me just a little—and how fortunate it was that you could speak with her in her own language.”
“The trouble is I’m not very good at it,” said Pelorat apologetically. “And the Universe is rather hard to grasp if you come at it suddenly. She said to me that if those little lights are giant worlds, each one just like Solaria—they’re much larger than Solaria, of course—that they couldn’t hang in nothing. They ought to fall, she says.”
“And she’s right, judging by what she knows. She asks sensible questions, and little by little, she’ll understand. At least she’s curious and she’s not frightened.”
“The thing is, Bliss, I’m curious, too. Look how Golan changed as soon as he found out there were no craters on the world we’re heading for. I haven’t the slightest idea what difference that makes. Do you?”
“Not a bit. Still he knows much more planetology than we do. We can only assume he knows what he’s doing.”
“I wish I knew.”
“Well, ask him.”
Pelorat grimaced. “I’m always afraid I’ll annoy him. I’m sure he thinks I ought to know these things without being told.”
Bliss said, “That’s silly, Pel. He has no hesitation in asking you about any aspect of the Galaxy’s legends and myths which he thinks might be useful. You’re always willing to answer and explain, so why shouldn’t he be? You go ask him. If it annoys him, then he’ll have a chance to practice sociability, and that will be good for him.”
“Will you come with me?”
“No, of course not. I want to stay with Fallom and continue to try to get the concept of the Universe into her head. You can always explain it to me afterward—once he explains it to you.”
64.
PELORAT ENTERED THE PILOT-ROOM DIFFIDENTLY. He was delighted to note that Trevize was whistling to himself and was clearly in a good mood.
“Golan,” he said, as brightly as he could.
Trevize looked up. “Janov! You’re always tiptoeing in as though you think it’s against the law to disturb me. Close the door and sit down. Sit down! Look at that thing.”
He pointed to the planet on the viewscreen, and said, “I haven’t found more than two or three craters, each quite small.”
“Does that make a difference, Golan? Really?”
“A difference? Certainly. How can you ask?”
Pelorat gestured helplessly. “It’s all a mystery to me. I was a history major at college. I took sociology and psychology in addition to history, also languages and literature, mostly ancient, and specialized in mythology in graduate school. I never came near planetology, or any of the physical sciences.”
“That’s no crime, Janov. I’d rather you know what you know. Your facility in ancient languages and in mythology has been of enormous use to us. You know that. —And when it comes to a matter of planetology, I’ll take care of that.”
He went on, “You see, Janov, planets form through the smashing together of smaller objects. The last few objects to collide leave crater marks. Potentially, that is. If the planet is large enough to be a gas giant, it is essentially liquid under a gaseous atmosphere and the final collisions are just splashes and leave no marks.
“Smaller planets which are solid, whether icy or rocky, do show crater marks, and these remain indefinitely unless an agency for removal exists. There are three types of removals.
“First, a world may have an icy surface overlying a liquid ocean. In that case, any colliding object breaks through the ice and splashes water. Behind it the ice refreezes and heals the puncture, so to speak. Such a planet, or satellite, would have to be cold, and would not be what we would consider a habitable world.
“Second, if a planet is intensely active, volcanically, then a perpetual lava flow or ash fallout is forever filling in and obscuring any craters that form. However, such a planet or satellite is not likely to be habitable either.
“That brings us to habitable worlds as a third case. Such worlds may have polar ice caps, but most of the ocean must be freely liquid. They may have active volcanoes, but these must be sparsely distributed. Such worlds can neither heal craters, nor fill them in. There are, however, erosion effects. Wind and flowing water will erode craters, and if there is life, the actions of living things are strongly erosive as well. See?”
Pelorat considered that, then said, “But, Golan, I don’t understand you at all. This planet we’re approaching—”
“We’ll be landing tomorrow,” said Trevize cheerfully.
“This planet we’re approaching doesn’t have an ocean.”
“Only some thin polar ice caps.”
“Or much of an atmosphere.”
“Only a hundredth the density of the atmosphere on Terminus.”
“Or life.”
“Nothing I can detect.”
“Then what could have eroded away the craters?”
“An ocean, an atmosphere, and life,” said Trevize. “Look, if this planet had been airless and waterless from the start, any craters that had been formed would still exist and the whole surface would be cratered. The absence of craters proves it can’t have bee
n airless and waterless from the start, and may even have had a sizable atmosphere and ocean in the near past. Besides, there are huge basins, visible on this world, that must have held seas and oceans once, to say nothing of the marks of rivers that are now dry. So you see there was erosion and that erosion has ceased so short a time ago, that new cratering has not yet had time to accumulate.”
Pelorat looked doubtful. “I may not be a planetologist, but it seems to me that if a planet is large enough to hang on to a dense atmosphere for perhaps billions of years, it isn’t going to suddenly lose it, is it?”
“I shouldn’t think so,” said Trevize. “But this world undoubtedly held life before its atmosphere vanished, probably human life. My guess is that it was a terraformed world as almost all the human-inhabited worlds of the Galaxy are. The trouble is that we don’t really know what its condition was before human life arrived, or what was done to it in order to make it comfortable for human beings, or under what conditions, actually, life vanished. There may have been a catastrophe that sucked off the atmosphere and that brought about the end of human life. Or there may have been some strange imbalance on this planet that human beings controlled as long as they were here and that went into a vicious cycle of atmospheric reduction once they were gone. Maybe we’ll find the answer when we land, or maybe we won’t. It doesn’t matter.”
“But surely neither does it matter if there was life here once, if there isn’t now. What’s the difference if a planet has always been uninhabitable, or is only uninhabitable now?”
“If it is only uninhabitable now, there will be ruins of the one-time inhabitants.”
“There were ruins on Aurora—”
“Exactly, but on Aurora there had been twenty thousand years of rain and snow, freezing and thawing, wind and temperature change. And there was also life—don’t forget life. There may not have been human beings there, but there was plenty of life. Ruins can be eroded just as craters can. Faster. And in twenty thousand years, not enough was left to do us any good. —Here on this planet, however, there has been a passage of time, perhaps twenty thousand years, perhaps less, without wind, or storm, or life. There has been temperature change, I admit, but that’s all. The ruins will be in good shape.”
