Asteroid 2024 YR4 became the first object to trigger IAWN's formal UN notification protocol, testing a warning system whose successful end point was an all-clear. The post On January 27, 2025, asteroid 2024 YR4 crossed the 1% impact-probability threshold; two days later, the International Asteroid Warning Network sent its first-ever formal asteroid warning to the UN’s space office—activating a planetary-defence protocol created more than a decade earlier but never previously used. appeared first on Space Daily .
On January 27, 2025, asteroid 2024 YR4 crossed the 1% impact-probability threshold; two days later, the International Asteroid Warning Network sent its first-ever formal asteroid warning to the UN’s space office—activating a planetary-defence protocol created more than a decade earlier but never previously used.
