Scientists Propose Nuclear Disruption to Mitigate Asteroid 2024 YR4 Threat
Researchers suggest using nuclear devices to disrupt asteroid 2024 YR4, which has a minimal chance of impacting Earth but a higher probability of striking the Moon in 2032.
In 2022, NASA's Double Asteroid Redirection Test (DART) mission successfully altered the trajectory of a small asteroid by colliding a spacecraft into it at high speed. Building on this concept, a team of scientists, including NASA researchers, is now considering a more aggressive approach for asteroid 2024 YR4. This near-Earth object has a 0.00081% chance of impacting Earth and a 4% chance of striking the Moon on December 22, 2032.
In a recent, yet-to-be-peer-reviewed paper, the team advocates for a "kinetic disruption mission" involving nuclear explosive devices to fragment the asteroid. This method is proposed due to the limited time available for a reconnaissance mission to determine the asteroid's mass, which is crucial for designing an effective deflection strategy. Current estimates suggest 2024 YR4 measures between 174 and 220 feet in length, but its exact mass remains uncertain.
The proposed plan involves launching two 100-kiloton nuclear devices capable of autonomous space navigation to intercept the asteroid. Each device would be approximately five to eight times more powerful than the bombs dropped on Nagasaki and Hiroshima in 1945. A backup explosive would also be included to ensure mission success.
Despite the low probability of 2024 YR4 impacting Earth, the potential threat to the Moon and the resulting debris pose risks to astronauts and space infrastructure. However, the feasibility of allocating resources for such a mission remains uncertain, given current budget constraints and the asteroid's current distance of over 379 million miles from Earth.