This story was inspired by the NASA article "NASA's Nancy Grace Roman Space Telescope Completed." The Roman Space Telescope, which carries a 2.4-meter primary mirror the same size as Hubble's yet images a hundred times as much sky at once, was completed, and after vibration testing engineers performed a final inspection to confirm that not a single speck of dust had settled on the primary mirror. In the story, a granddaughter finds, forty years later, the work of a pair of hands that left nothing behind. Among the days you ended without anything happening, was there one that kept someone's sky clear?