2024 YR4 may not make catastrophic history, but it did set a new record for the JWST as the smallest object ever targeted by the telescope. It’s also one of the smallest space objects to have its size directly measured.

YR4 won't hit Earth, but scientists now estimate a 4% chance it could strike the Moon, possibly affecting space missions.

A large asteroid whose chances of hitting Earth have been all but ruled out is now slightly more likely to hit the Moon than previously thought, Nasa says. When first discovered, asteroid 2024 YR4 had a very small chance of impacting Earth in 2032 but the US space agency has cut that chance to 0.