Beyond Pluto: The 1992 QB1 Discovery That Expanded Our Solar System

On Aug. 30, 1992, astronomers spotted 1992 QB1, the first confirmed Kuiper Belt object beyond Neptune and Pluto; a tiny ~100-mile-wide body, its discovery revealed a vast belt of icy worlds and reshaped our view of the solar system, which now includes thousands of Kuiper Belt objects and helped reclassify Pluto as a dwarf planet after later discoveries and missions like New Horizons.