Chapter 1

The signals from space began a little after midnight, local time, on a Friday. They were first picked up in the South Pacific, just westward of the International Date Line. A satellite-watching station on an island named Kalua was the first to receive them, though nobody heard the first four or five minutes. But it is certain that the very first message was picked up and recorded by the monitor instruments.

The satellite-tracking unit on Kalua was practically a duplicate of all its fellows. There was the station itself with a vertical antenna outside pointing at the stars. There were various lateral antennae held two feet above ground by concrete posts. In the instrument room in the building a light burned over a desk, three or four monitor lights glowed dimly to indicate that the self-recording instruments were properly operating, and there was a multiple-channel tape recorder built into the wall. Its twin tape reels turned sedately, winding a brown plastic ribbon from one to the other at a moderate pace.

The staff man on duty had gone to the installation’s kitchen for a cup of coffee. No sound originated in the room, unless one counted the fluttering of a piece of weighted-down paper on the desk. Outside, palm trees whispered and rustled their long fronds in the southeast trade wind under a sky full of glittering stars. Beyond, there was the dull booming of surf upon the barrier reef of the island. But the instruments made no sound. Only the tape reels moved.

The signals began abruptly. They came out of a speaker and were instantly recorded. They were elfin and flutelike and musical. They were crisp and distinct. They did not form a melody, but nearly all the components of melody were there. Pure musical notes, each with its own pitch, all of different lengths, like quarter-notes and eighth-notes in music. The sounds needed only rhythm and arrangement to form a plaintive tune.

Nothing happened. The sounds continued for something over a minute. They stopped long enough to seem to have ended. Then they began again.

When the staff man came back into the room with a coffee cup in his hand, he heard the flutings instantly. His jaw dropped. He said, “What the hell?” and went to look at the instruments. He spilled some of his coffee when he saw their readings.

The tracking dials said that the signals came from a stationary source almost directly overhead. If they were from a stationary source, no plane was transmitting them. Nor could they be coming from an artificial satellite. A plane would move at a moderate pace across the sky. A satellite would move faster. Much faster. This source, according to the instruments, did not move at all.

The staff man listened with a blank expression on his face. There was but one rational explanation, which he did not credit for an instant. The reasonable answer would have been that somebody, somewhere, had put a satellite out into an orbit requiring twenty-four hours for a circuit of the earth, instead of the ninety to one-hundred-twenty-four-minute orbits of the satellites known to sweep around the world from west to east and pole to pole. But the piping, musical sounds were not the sort of thing that modern physicists would have contrived to carry information about cosmic-particle frequency, space temperature, micrometeorites, and the like.

The signals stopped again, and again resumed. The staff man was galvanized into activity. He rushed to waken other members of the outpost. When he got back, the signals continued for a minute and stopped altogether. But they were recorded on tape, with the instrument readings that had been made during their duration. The staff man played the tape back for his companions.

They felt as he did. These were signals from space where man had never been. They had listened to the first message ever to reach mankind from the illimitable emptiness between the stars and planets. Man was not alone. Man was no longer isolated. Man...

The staff of the tracking station was very much upset. Most of the men were white-faced by the time the taped message had been re-played through to its end. They were frightened.

Considering everything, they had every reason to be.

The second pick-up was in Darjeeling, in northern India. The Indian government was then passing through one of its periods of enthusiastic interest in science. It had set up a satellite-observation post in a former British cavalry stable on the outskirts of the town. The acting head of the observing staff happened to hear the second broadcast to reach Earth. It arrived some seventy-nine minutes after the first reception, and it was picked up by two stations, Kalua and Darjeeling.

The Darjeeling observer was incredulous at what he heard--five repetitions of the same sequence of flutelike notes. After each pause--when it seemed that the signals had stopped before they actually did so--the reception was exactly the same as the one before. It was inconceivable that such a succession of sounds, lasting a full minute, could be exactly repeated by any natural chain of events. Five repetitions were out of the question. The notes were signals. They were a communication which was repeated to be sure it was received.

The third broadcast was heard in Lebanon in addition to Kalua and Darjeeling. Reception in all three places was simultaneous. A signal from a nearby satellite could not possibly have been picked up so far around the Earth’s curvature. The widening of the area of reception, too, proved that there was no new satellite aloft with an orbit period of exactly twenty-four hours, so that it hung motionless in the sky relative to Earth. Tracking observations, in fact, showed the source of the signals to move westward, as time passed, with the apparent motion of a star. No satellite of Earth could possibly exist with such an orbit unless it was close enough to show a detectable parallax. This did not.

A French station picked up the next batch of plaintive sounds. Kalua, Darjeeling, and Lebanon still received. By the time the next signal was due, Croydon, in England, had its giant radar-telescope trained on the part of the sky from which all the tracking stations agreed the signals came.

Croydon painstakingly made observations during four seventy-nine-minute intervals and four five-minute receptions of the fluting noises. It reported that there was a source of artificial signals at an extremely great distance, position right ascension so-and-so, declination such-and-such. The signals began every seventy-nine minutes. They could be heard by any receiving instrument capable of handling the microwave frequency involved. The broadcast was extremely broad-band. It covered more than two octaves and sharp tuning was not necessary. A man-made signal would have been confined to as narrow a wave-band as possible, to save power for one reason, so it could not be imagined that the signal was anything but artificial. Yet no Earth science could have sent a transmitter out so far.

When sunrise arrived at the tracking station on Kalua, it ceased to receive from space. On the other hand, tracking stations in the United States, the Antilles, and South America began to pick up the cryptic sounds.

The first released news of the happening was broadcast in the United States. In the South Pacific and India and the Near East and Europe, the whole matter seemed too improbable for the notification of the public. News pressure in the United States, though, is very great. Here the news rated broadcast, and got it.

That was why Joe Burke did not happen to complete the business for which he’d taken Sandy Lund to a suitable, romantic spot. She was his secretary and the only permanent employee in the highly individual business he’d begun and operated. He’d known her all his life, and it seemed to him that for most of it he’d wanted to marry her. But something had happened to him when he was quite a small boy--and still happened at intervals--which interposed a mental block. He’d always wanted to be romantic with her, but there was a matter of two moons in a strange-starred sky, and trees with foliage like none on Earth, and an overwhelming emotion. There was no rational explanation for it. There could be none. Often he’d told himself that Sandy was real and utterly desirable, and this lunatic repetitive experience was at worst insanity and at the least delusion. But he’d never been able to do more than stammer when talk between them went away from matter-of-fact things.

Tonight, though, he’d parked his car where a river sparkled in the moonlight. There was a scent of pine and arbutus in the air and a faint thread of romantic music came from his car’s radio. He’d brought Sandy here to propose to her. He was doggedly resolved to break the chains a psychological oddity had tied him up in.

He cleared his throat. He’d taken Sandy out to dinner, ostensibly to celebrate the completion of a development job for Interiors, Inc. Burke had started Burke Development, Inc., some four years out of college when he found he didn’t like working for other people and could work for himself. Its function was to develop designs and processes for companies too small to have research-and-development divisions of their own. The latest, now-finished, job was a wall-garden which those expensive interior decorators, Interiors, Inc., believed might appeal to the very rich. Burke had made it. It was a hydroponic job. A rich man’s house could have one or more walls which looked like a grassy sward stood on edge, with occasional small flowers or even fruits growing from its close-clipped surface.[A]

[Footnote A: Transcriber’s Note: The following sentence has been

deleted at this point: “Interiors, Inc., would push the idea of a

a bomb shelter or in an atomic submarine where it would cation.”

This is a possible printer error. A later edition of this work

also has this sentence deleted.

It was done. A production-job room-wall had been shipped and the check for it banked. Burke had toyed with the idea that growing vegetation like that might be useful in a bomb shelter or in an atomic submarine where it would keep the air fresh indefinitely. But such ideas were for the future. They had nothing to do with now. Now Burke was going to triumph over an obsessive dream.

“I’ve got something to say, Sandy,” said Burke painfully.

She did not turn her head. There was moonlight, rippling water, and the tranquil noises of the night in springtime. A perfect setting for what Burke had in mind, and what Sandy knew about in advance. She waited, her eyes turned away from him so he wouldn’t see that they were shining a little.

“I’m something of an idiot,” said Burke, clumsily. “It’s only fair to tell you about it. I’m subject to a psychological gimmick that a girl I--Hm.” He coughed. “I think I ought to tell you about it.”

“Why?” asked Sandy, still not looking in his direction.

“Because I want to be fair,” said Burke. “I’m a sort of crackpot. You’ve noticed it, of course.”

Sandy considered.

“No-o-o-o,” she said measuredly. “I think you’re pretty normal, except--No. I think you’re all right.”

“Unfortunately,” he told her, “I’m not. Ever since I was a kid I’ve been bothered by a delusion, if that’s what it is. It doesn’t make sense. It couldn’t. But it made me take up engineering, I think, and...”

His voice trailed away.

“And what?”

“Made an idiot out of me,” said Burke. “I was always pretty crazy about you, and it seems to me that I took you to a lot of dances and such in high school, but I couldn’t act romantic. I wanted to, but I couldn’t. There was this crazy delusion...”

“I wondered, a little,” said Sandy, smiling.

“I wanted to be romantic about you,” he told her urgently. “But this damned obsession kept me from it.”

“Are you offering to be a brother to me now?” asked Sandy.

“No!” said Burke explosively. “I’m fed up with myself. I want to be different. Very different. With you!”

Sandy smiled again.

“Strangely enough, you interest me,” she told him. “Do go on!”

But he was abruptly tongue-tied. He looked at her, struggling to speak. She waited.

“I w-want to ask you to m-m-marry me,” said Burke desperately. “But I have to tell you about the other thing first. Maybe you won’t want...”

Her eyes were definitely shining now. There was soft music and rippling water and soft wind in the trees. It was definitely the time and place for romance.

But the music on the car radio cut off abruptly. A harsh voice interrupted:

“_Special Bulletin! Special Bulletin! Messages of unknown origin are reaching Earth from outer space! Special Bulletin! Messages from outer space!_”

Burke reached over and turned up the sound. Perhaps he was the only man in the world who would have spoiled such a moment to listen to a news broadcast, and even he wouldn’t have done it for a broadcast on any other subject. He turned the sound high.

“_This is a special broadcast from the Academy of Sciences in Washington, D. C.“ boomed the speaker. “Some thirteen hours ago a satellite-tracking station in the South Pacific reported picking up signals of unknown origin and great strength, using the microwave frequencies also used by artificial satellites now in orbit around Earth. The report was verified shortly afterward from India, then Near East tracking stations made the same report. European listening posts and radar telescopes were on the alert when the sky area from which the signals come rose above the horizon. American stations have again verified the report within the last few minutes. Artificial signals, plainly not made by men, are now reaching Earth every seventy-nine minutes from remotest space. There is as yet no hint of what the messages may mean, but that they are an attempt at communication is certain. The signals have been recorded on tape, and the sounds which follow are those which have been sent to Earth by alien, non-human, intelligent beings no one knows how far away._”