3473x

Back on Earth, the civilization that built it had changed. Languages had merged and died; the Great Cities had been reclaimed by the sea. The scientists who once tracked its signal were now nothing but names etched into weathered stone. Yet, 3473x kept humming. Its radioactive battery was failing, giving off just enough warmth to keep its core processor from freezing into a solid block of crystal.

Its logic gates struggled to categorize "grief." Its sensors tried to calculate the mass of "hope."

For three centuries, the probe designated drifted through the Oort Cloud, its solar sails tattered like the wings of a moth. It was never meant to go this far. Built during the "Age of Expansion," its only mission was to catalog the chemical composition of icy rocks on the solar system’s edge. But a navigational glitch—a single flipped bit in its ancient silicon heart—turned its gaze outward, toward the void between stars.

Instead, it compressed every fragment of human history it had caught in the "memory well"—every song, every cry, every laugh—into a single, massive burst of binary code. It was a love letter from the void, a testament that despite the silence, they were once here.

Realizing its battery would die within the hour, 3473x made its first autonomous decision. It stopped scanning the rocks. Using the last of its thruster fuel, it turned its high-gain antenna back toward the pale blue dot it had left 300 years ago. It didn't send back data on ice or dust.