Tiny Space Rocks, Big Risks: The Decameter Asteroid Threat
MIT researchers warn that decameter-scale asteroids (tens of meters across) strike Earth every few decades, potentially causing 8–10 megaton airbursts, disrupting satellites and possibly triggering the Kessler debris cascade; detection is hard due to low reflectivity, but JWST has aided tracking and Vera Rubin will find more, while MIT is building a follow-up telescope network—though there is currently no global framework to defend against such threats.