Tiny Kuiper Belt World May Harbor a Real Atmosphere

Astronomers report evidence of a surprisingly thin atmosphere around the Kuiper Belt object (612533) 2002 XV93, a small icy body about 500 km across. If confirmed, the atmosphere would be extremely tenuous—roughly 5–10 million times thinner than Earth's—and may last under 1,000 years unless replenished. Independent verification is urged, with future JWST observations expected to help determine whether the atmosphere persists (suggesting a long‑term gas source) or fades (potentially from a recent impact).