“I am giving this letter to the friend who is helping me: he will hold it until he knows that my plan has succeeded-in its first phase, at least-and that it is too late for the Overlords to interfere. I shall be so far away, and travelling at such a speed, that I doubt if any recall message can overtake me. Even if it could, it seems most unlikely that the ship would be able to put back to Earth. And I very much doubt if I’m all that important, anyway.
“First, let me explain what led to this. You know that I’ve always been interested in spaceflight, and have always felt frustrated because we’ve never been allowed to go to the other planets, or to learn anything about the civilization of the Overlords. If they had never intervened, we might have reached Mars and Venus by now. I admit that it is equally probable that we would have destroyed ourselves with coli~alt bombs and the other global weapons the twentieth century was developing. Yet sometimes I wish we could have had a chance of standing on our own feet.
“Probably the Overlords have their reasons for keeping us in the nursery, and probably they are excellent reasons. But even if! knew what they were, I doubt if it would make much difference to my own feelings-or my actions.
“Everything really began at that party of Rupert’s. (He doesn’t know about this, by the way, though he put me on the right track.) You remember that silly s�ance he arranged and how it ended when that girl-I forget her name-fainted? I’d asked what star the Overlords came from, and tne reply was ‘NGS 549672.’ I’d not expected any answer, and had treated the whole business as a joke until then. But when I realized that this was a number in a star catalogue, I decided to look into it. I found that the star was in the constellation Carina-106
and one of the few facts that we do know about the Overlords is that they come from that dire~*ion.
“Now I don’t pretend to understand how that information reached us, or where it originated. Did someone read Rashaverak’s mind? Even if they had, it’s hardly likely that he would have known the reference number of his sun in one of our catalogues. It’s a complete mystery, and I leave it to people like Rupert to solve-if they can! I’m just content to take the information, and to act on it.
“We know a lot now, through our observation of their departure, about the speed of the Overlord ships. They leave the Solar System under such tremendous accelerations that they approach the velocity of light in less than an hour. That means that the Overlords must possess some kind of propulsive system that acts equally on every atom of their ships, so that anything aboard won’t be crushed instantly. I wonder why they employ such colossal accelerations, when they’ve got all space to play with and could take their time picking up speed?
My theory is that they can somehow tap the energy fields round the stars, and so have to do their starting and stopping while they’re fairly close to a sun. But that’s all by the way….
“The important fact was that I knew how far they had to travel, and therefore how long the journey took. NGS 549672 is forty light-years from Earth. The Overlords ships reach more than ninety-nine per cent of the speed of light, so the trip must last forty years of our dine. Our time: that’s the crux of the matter.
“Now as you may have beard, strange things happen as one approaches the speed of light. Time itself begins to flow at a different rate-to pass more slowly, so that what would be months on Earth would be no more than days on the ships of the Overlords. The effect is quite fundamental: it was discovered by the great Einstein more than a hundred years ago.
“I have made calculations based on what we know about the Stardrive, and using the firmly-established results of Relativity theory. From the viewpoint of the passengers on one of the Overlord ships, the journey to NGS 549672 will last not more than two months-even thou~h by Earth’s reckoning forty years will have passed. I know this seems a paradox, and if it’s any consolation it’s puzzled the world’s best brains ever since Einstein announced it.
“Perhaps this example will show you the sort of thing that
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can happen, and will give you a clearer picture of the situation. If the Overlords send me straight back to Earth, I shall arrive home having aged only four months. But on Earth itself; eighty years will have passed. So you understand, Maia, that whatever happens, this is goodbye.
“I have few ties binding me here, as you know well enough,
so I can leave with a clear conscience. I’ve not told mother yet:
she would get hysterical, and I couldn’t face that. It’s better this way. Though I’ve tried to make allowances, ever since father died-oh, there’s no point now in going into all that again!
“I’ve terminated my studies and told the authorities that, for family reasons, I’m moving to Europe. Everything has been settled and there should be nothing for you to worry about.
“By this time, you may imagine that I’m crazy, since it seems impossible for anyone to get into one of the Overlord ships. But I’ve found a way. It doesn’t happen very often, and after this it may never happen again, for I’m sure Karellen never makes the same mistake twice. Do you know the legend of the Wooden Horse, that got the Greek soldiers into Troy? But there’s a story from the Old Testament that’s an even closer parallel… .”
“You’ll certainly be much more comfortable than Jonah,” said Sullivan. “There is no evidence that he was provided with electric light or sanitation. But you’ll need a lot of. provisions, and I see you’re taking oxygen. Can you take enough for a two month’! voyage in such a small space?”.
He stubbed his finger on the careful sketches which Jan had laid on the table. The microscope acted as a paper weight at one end, the skull of some improbable fish held down the other.
“I hope the oxygen isn’t necessary,” said Jan. ‘We know that they can breathe our atmosphere, but they don’t seem to like it very much and I might not be able to manage theirs at all. As for the supply situation, using narcosamine solves that. It’s perfectly safe. When we’re under way, I’ll take a shot that will knock me out for six weeks, plus or minus a few days. P11 be nearly there by then. Actually, it wasn’t the food and xygen that was worrying me, so much as the boredom.”
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Professor Sullivan nodded thoughtfully.
“Yes, narcosamine is safe enough, and can be calibrated fairly accurately. But mind you’ve got plenty of food handy-you’ll be ravening when you wake up, and as weak as a kitten. Suppose you starved to death because you hadn’t the strength to use a can-opener?”
“I’d thought of that,” said Jan, a little hurt. “I’ll work up through sugar and chocolate in the usual way.”
“Good: I’m glad to see that you’ve been into the problem thoroughly, and aren’t treating it like some stunt you can back out of if you don’t like the way it’s going. It’s your life you’re playing with, but I’d hate to feel I was helping you to commit suicide.”
He picked up the skull and lifted it absentmindedly in his bands. Jan grabbed the plan to prevent it rolling up.
“Luckily,” continued Professor Sullivan, “the equipment you need is all fairly standard, and our shop can put it together in a few weeks. And if you decide to change your mind-”
“I won’t,” said Jan.
“… I’ve considered all the risks I’m taking, and there seems tobenoflawintheplan. Attheend ofsixweeks I’ll emerge like any other stowaway and give myself up. By then-in my time, remember-the journey will be nearly over. We will be about to land on the world of the Overlords.
“Of course, what happens then is up to them. Probably I’ll be sent home on the next ship-but at least I can expect to see something. I’ve got a four millimetre camera and thousands of metres of film: it won’t be my fault if I can’t use it. Even at the worst, I’ll have proved that man can’t be kept in quarantine forever. I’ll have created a precedent that will compel Karellen to take some action.
“That, my dear Maia, is all I have to say. I know you won’t miss mc greatly: let’s be honest and admit that we never had very strong ties, and now that you’ve married Rupert you’ll be quite happy in your own private universe. At least, I hope so.