On the orbital station Aurora, Captain Mikael Jensen and his crew detect a signal from an unknown galaxy. The message grows stronger, stranger, and seems to be coming closer.
For six years, the orbital station Aurora had circled the distant purple world beneath it, its silver dome catching the pale light of three suns. Six years of routines, system checks, recycled air, and the slow, grinding patience of waiting for a mission to end.
Captain Mikael Jensen had given up on sleep hours ago. He lay in his capsule with his eyes open, listening to the steady pulse of life support through the walls, until the silence became unbearable. By the time he reached the main control module, the station felt too large and too empty.
Doctor Li Mei was already there, a mug of coffee drifting in front of her as she studied the central display.
"Couldn't sleep either?" Mikael asked.
Li did not look away from the screen. "We have it again. Come and see."
A pattern of characters flickered across the monitor, sharp and precise, nothing like any Earth language, known code, or compression scheme. The signal arrived in short bursts, returning every nine minutes with the same disciplined rhythm, as if someone far away were knocking with patient intent.
Engineer David came in next, still half-asleep, followed by Sofia, the youngest member of the research team, her expression already tight with dread before anyone spoke.
Sofia ran the translator out of habit, though they both knew it would fail. The program produced only a scatter of shapes: spirals, angles, broken lines, mirrored marks that seemed almost deliberate in their ugliness.
"I checked every archive we have," she said. "There is nothing like it in any known database."
She swallowed and pointed at the latest reading.
"The signal is stronger than it was last cycle. And it's changing direction."
Mikael leaned closer. The data was clean, too clean, the sort of pattern that did not happen by accident.
"Changing direction where?" he asked.
Sofia did not answer right away. Her eyes moved to the outer feed, where the black of space should have been empty.
Then every screen in the module flared green, then violet, and went dead.
For one suspended second, Aurora held its breath.
Outside the panoramic window, where there had been nothing but stars, a vast glowing object now hung in the dark, turning slowly on its axis. A stream of pulsing light extended from it toward the station, steady as a beam, as if it had already found them.
Mikael looked from one face to the next and saw the same thing reflected in all of them: recognition of the impossible, and the sudden, terrible certainty that whatever had been calling across the void had finally arrived.