7z 005 | V1x

A voice, sounding like grinding tectonic plates, filtered through the static. It didn't speak English, but the translator software—built to decode alien mathematics—struggled for a moment before spitting out a single word on the screen:

At the Blackwood Sub-Antarctic Observatory, the terminal blinked with a single line of pulsing amber text: SIGNAL SOURCE: V1X 7z 005 V1X 7z 005

Elias, the night technician, frowned. The "V1X" prefix was reserved for ancient, decommissioned Surveyor probes from the early 21st century. But "7z" was a frequency range the human race hadn't used in eighty years. It was a ghost frequency. A voice, sounding like grinding tectonic plates, filtered