world like a sheet of paper-unable to move above or below it. If I drew a circle in your flat world, but left a small gap in it, you would say that the gap was the only way into the circle. Right?'
'Right.'
'If anyone went into the circle, they could only come out the same way?'
'So that's what you're driving at. The circle could be a cross-section of a tube passing through Flatland. If I was clever enough to crawl up the tube, by moving into the third dimension, I would leave my flat universe altogether.'
'exactly. But the tube might bend back into Flatland again, and you could come out somewhere else. To your friends, it would seem that you'd traveled from A to B without crossing the space between. You'd have disappeared down one hole and emerged from a totally different one, maybe thousands of miles away.'
'But what advantage would that be? Surely the straight line in Flatland itself would still be the shortest distance between A and B.'
'Not necessarily. It depends what you mean by a straight line. Flatland might really be wrinkled, though the Flatlanders wouldn't be able to detect it. I'm not a topologist, but I can see how there might be lines that were straighter than straight, if some of them went through other dimensions.'
'We can argue this until kingdom come,' said Hunter. 'But supposing it's true-what shall we do about it?'
'There's not much we can do. Even if we had an unlimited fuel and oxygen supply, it might be suicide to go into that thing. Though it may be a shortcut, it could be a damn long one. Suppose it comes out somewhere a thousand light-years away-that won't help us, if the trip takes a century. We wouldn't appreciate saving nine hundred years.'
That was perfectly true; and there might be other dangers, as inconceivable to the mind of man as this anomaly in space itself. Discovery had come to the end of her travels; she must remain here in an eternal orbit, just a few miles from a mystery that she could never approach.
Like Moses looking into the promised land, they must stare at marvels beyond their reach.
BALL GAME
After a while they began to call it the Star Gate; no one was quite sure who coined the name. And because the human mind can accept anything, however strange, its mystery soon ceased to haunt them. One day, perhaps, they would understand how the stars were shining down there at the bottom of that chasm; the night sky, reflected in a pool of still water, might have seemed just as great a mystery to early man.
They still had twenty days of operating time before they would have to go into hibernation, and there was enough fuel for the pods to make five more trips down to the surface. Bowman allowed three visits, at internals of a week, and then left the pods in their airlocks, fully provisioned, ready for any future emergency that might arise.
The descents taught them little more than they already knew. They watched the regular transit of those strange stars and the giant red sun, drifting with clockwork precision across the distant end of the Star Gate-still in a direction, and at a speed, that had nothing to do with the spin of Jupiter V itself.
Kaminski brooded for hours over his photographs, trying to identify the star patterns with the aid of the maps stored in Athena's memory. His total failure neither disappointed nor surprised him. If indeed he was looking out through a window onto some remote part of the Galaxy, there was no hope of recognizing the view. One of those faint stars might even be the Sun; he could never identify it. From a few score light-years away, Type G-zeroes are as indistinguishable as peas in a pod.
The three remaining instrumented probes were dropped at intervals of a week-the last one, just before hibernation was due to commence. Each performed in an identical manner, dwindling away into impossible distances before its signals were lost. The record depth-in this hundred mile-diameter world!-was eleven thousand miles….
After that, they had done everything that was humanly possible, their stores were almost exhausted, and it was time to sleep. In one sense, their mission had been a success, they had discovered what they had been sent to find-even if they did not know what it was. But in another, the expedition had failed, since they could not report their findings to Earth. All Kimball's attempts to re-establish communications with jury-rigged antennas and overloaded output circuits had been successful. The daily messages and news reports continued to come in, and were at once encouraging and frustrating. It was good for their morale to know that Earth, and their friends, had not forgotten them, and that the preparations for their return were going ahead at the highest priority. But it was maddening not to be able to reply, and to be the custodians of a secret that would rock human society to its foundations.
And it was also unsettling to hear the messages that continued to arrive for Poole and Whitehead, and to see the faces of their friends and relatives as they sent greetings to men who had been dead for months. It was a constant reminder of their own uncertain future, now that it was time for their hibernation to begin.
There were better places to have slept, but they had little choice in the matter. They could only hope that Jupiter V would continue to treat them with complete indifference, as they circled it every ninety minutes until, three or four or five years from now, the recovery expedition arrived.
During the last days they checked every detail of the ship, closed down all unnecessary equipment, and tried to anticipate everything that could possibly go wrong. The shadow of Poole 's death often lay heavy on their minds, but they never mentioned it. Whether it had been due to a random failure, or a loss of tolerance, there was nothing that could be done. They had no alternative but to proceed as planned.
One by one, their work completed, they made their goodbyes and went to rest, until at last only the captain was left. To Bowman, all this had a haunting familiarity; once before he had cracked the same jokes, made the same-he hoped-temporary farewells, and had been left alone in the sleeping ship.
He would wait two days before he followed the others. One would be long enough to check that everything was running smoothly; the second would be his own-to share with the last game of the World Series.
Curiously enough, while on Earth, he had never been an avid baseball fan, but like all the members of the crew he had acquired a passionate interest in the sport programs relaying from Earth. One day more or less made no difference to Bowman now, and he was anxious to see if the New York Yankees would make a comeback after their long years in the doldrums. He doubted it; the Mets seemed more impregnable than ever.
And so, in the now deserted Control Center , David Bowman took his leave of the strangest sky that any man had ever seen. Half of it was filled with the steeply curving, ammonia-spattered landscape of Jupiter V; most of the rest was occupied by Jupiter itself. A huge, waning crescent, it was shrinking almost visibly as the ship rushed into its shadow; the distant Sun would soon be eclipsed behind it. And when, thought Bowman, shall I see the sun again?
The solar glare had already swallowed up the evening star called Earth. But though he could not see the world of men, its voice was still echoing through the ship, and on the Control Center monitor screen was a spectacle that would doubtless have baffled many quite intelligent extraterrestrial races.
One entity, holding a stubby rod in both hands, confronted another carrying a small spherical object. They both stood on a flat, triangular area of ground, while grouped around them in frozen, expectant postures, were some dozen other individuals. And at a greater distance, thousands more sat motionless on concentric tiers of seats.
The creature holding the sphere started to whirl its grasping limb around with ever-increasing violence. Suddenly, so swiftly that the eye could hardly follow its motion, the sphere escaped from its resting place and hurtled toward the entity with the rod. The creature was obviously in grave danger-but the projectile missed the intended target, and went racing past it.
There was a brief flurry of activity; then the sphere was returned to the original holder. The ordeal, it seemed, was to continue….
This time, however, the victim was able to defend himself more effectively. Puny though his protective shield was by luck or skill he managed to intercept the hurtling projectile-and even to send it soaring back over the head of his tormentor. Then, while his enemies were distracted, he started to spring for safety….
But Bowman never saw Malczinsky finish his home run. At that moment the alert and sleepless Athena, still
