A mysterious signal from beneath Europa’s ice pulls three astronauts toward a hidden presence no sensor can explain.
Europa never truly saw dawn. The light of distant Jupiter came and went in pale slashes across the ice, leaving the Artemis research station half-buried in fog and shadow. Inside, Lena stood over the main console with her arms folded tight, Max hunched beside the comms array, and Miriam watching the scrolling data with the focused stillness of someone trying not to make a mistake.
The signals had started three days ago. At first they were only static threaded with faint, repeating pulses. Then the pattern sharpened. Then it changed again. Nothing about it matched natural interference, and nothing in the station’s records matched it either.
Max tapped the screen and enlarged the waveform. "It keeps correcting itself," he said. "Like whoever’s sending it knows we’re listening."
"Or knows we’re here," Miriam said quietly.
Lena didn’t like either possibility. The source was still buried somewhere beneath kilometres of ice, beyond the reach of their drills and well below the mapped voids their sensors had catalogued. Yet every hour the message grew cleaner, as if it were climbing toward them through the dark.
Another pulse arrived. The code burst across the monitor in sharp geometric lines, rearranging itself before their eyes. Miriam leaned closer, her breath fogging the glass. "That’s not noise. It’s structured. Look at the repeats."
Lena’s pulse quickened as the shapes resolved into something almost impossible to mistake.
"A map," she said.
A single point flashed red beneath the ice, far below any known cavity. Then the station lights flickered. Once. Twice.
The speakers crackled.
A voice, warped but unmistakably deliberate, slid through the static.
You are not alone.
The room went still. Max reached for the console, but Lena was already staring through the lab window at the ice beyond the station. For one bright second, something moved under the surface, a pale flare racing through the frozen darkness as if the moon itself had answered.
Then the signal cut out.
And from deep beneath Europa, something struck the ice.