China Sets Up 'Planetary Defense' Unit Over 2032 Asteroid Threat
YR4 has a small chance of hitting Earth in 2032, and China is preparing to deter it by mirroring a U.S. space test.
Webb telescope has a new mission: surveillance of a threatening asteroid
The Webb telescope is well-suited to identify asteroid 2024 YR4's size. Webb views a type of light we can't see with the ...