How diffractive solar sails could stop a killer asteroid at 100 km/s

How diffractive solar sails could stop a killer asteroid at 100 km/s

Asteroids don't come with a warning label that they might one day hit Earth. While we don't know of any currently on course to do so, we are finding thousands of new ones each year, and there's always a chance that one could.

phys.org/news/2026-09-diffractive-solar-killer-asteroid-kms.html