US EditionThe researchers charged with defending the planet against asteroids
- In December, scientists announced that asteroid YR4 posed a low but noteworthy risk of impacting Earth in 2032, leading to an international mobilization of experts.
- This threat activated the International Asteroid Warning Network for the first time since its 2014 formation, itself part of a global system created after the 2013 Chelyabinsk meteor.
- Researchers have catalogued over 11,000 near-Earth objects , some large enough to destroy cities, and developed deflection methods including NASA's 2022 kinetic impactor mission DART.
- Experts emphasize that asteroid impacts are inevitable and warn that shifting an asteroid’s speed permanently alters its future orbit, with nuclear deflection under study despite Outer Space Treaty restrictions.
- The decision earlier this year to remove YR4 from the list of potential hazards demonstrates that current monitoring systems are effectively addressing asteroid threats, while efforts continue to improve detection of smaller, less well-known near-Earth objects and to maximize warning times.
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The researchers charged with defending the planet against asteroids
In December, astronomers identified that the asteroid YR4 had a small but not insignificant chance of striking Earth in 2032, a scenario that experts postulated could have more explosive potential than 500 Hiroshima nuclear bombs.
·United Kingdom
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