The Originality of Stardust Code

In the year 2742 AD, in the main control room of the Earth-orbiting space station "Watcher 7", Lin Xia's fingertips ran across the virtual touch screen, and blue data flow poured out like a waterfall. As the chief data analyst of the space station, her job should have been to monitor the flow of interstellar dust and record the trajectories of gamma ray bursts. But today, a set of abnormal signals from the edge of the Kuiper Belt pierced her attention like a tiny thorn. "The frequency is stable at 1420 megahertz, which is the characteristic frequency of hydrogen atoms..." Lin Xia muttered to himself, calling up the spectrum of the signal. Normal cosmic background radiation is chaotic white noise, but this set of signals shows perfect periodicity, like some kind of carefully encoded language. She zoomed in on one of the waveforms and found that the intervals between each peak were accurate to nanoseconds and could never be natural.