Islands of Space

by Jr. John W. Campbell

In time, the Satorians rediscovered the space drive, but by this time, living on the new planet had changed them physically. They were somewhat smaller than the Nansalians, and lighter in color, for their world was always sunless. The warm rays of the sun had tanned the skins of the Nansalians to a darker color.

When the Satorians first came to Nansal, it was presumably in peace. After so many hundreds of years without war, the Nansalians accepted them, and trade treaties were signed. For years, the Satorians traded peacefully.

In the meantime, Satorian spies were working to find the strengths and weaknesses of Nansal, searching to discover their secret weapons and processes, if any. And they rigorously guarded their own secrets. They refused to disclose the secrets of the magnetic beam and the magnetic space drive.

Finally, there were a few of the more suspicious Nansalians who realized the danger in such a situation. There were three men, students in one of the great scientific schools of Nansal, who realized that the situation should be studied. There was no law prohibiting the men of Nansal from going to Sator, but it seemed that Nature had raised a more impenetrable barrier.

All Nansalians who went to Sator died of a mysterious disease. A method was found whereby a man's body could be sterilized, bacteriologically speaking, so he could not spread the disease, and this was used on all Satorians entering Nansal. But you can't sterilize a whole planet. Nansalians could not go to Sator.

But these three men had a different idea. They carefully studied the speech and the mannerisms and customs of the Satorians. They learned to imitate the slang and idioms. They went even further; they picked three Satorian spaceship navigators and studied them minutely every time they got a chance, in order to learn their habits and their speech patterns. The three Satorians were exceptionally large men, almost perfect doubles of the three Nansalians—and, one by one, the Nansalians replaced them.

They had bleached their faces, and surgeons, working from photographs, changed their features so that the three Nansalians were exact doubles of the three astrogators. Then they acted. On three trips, one of the men that went back as navigator was a Nansalian.

It was six years before they returned to Nansal, but when they finally did, they had learned two things.

In the first place, the 'disease' which had killed Nansalians who had come in contact with Satorians on Nansal was nothing but a poison which acted on contact with the skin. The Nansalians who had gone to Sator had simply been murdered. There was no disease; it had simply been a Satorian plot to keep Nansalians from going to Sator.

The second thing they had learned was the secret of the Satorian magnetic space drive.