Nuking an asteroid on short notice could save us

A new paper from researchers at the China Academy of Launch Vehicle Technology explores the possibility of using nuclear weapons to deflect or destroy near-Earth asteroids. The study outlines two potential methods: a quick, simple approach involving a nuclear explosion on the asteroid's surface, and a more complex method that involves pre-excavating a crater and then detonating a nuclear device inside it. The second method is considered more effective because the energy transfer is greater when the explosion occurs in a deeper crater.

The paper highlights that if an asteroid is discovered within a few days of impact, the most effective way to alter its trajectory is to use a nuclear explosion. However, this method is impractical due to the difficulty in selecting an ideal impact site and the need for precise timing. The alternative method, using a kinetic impactor to create a crater and then detonating a nuclear device inside the crater, is more feasible but still presents significant engineering challenges.

The study emphasizes the importance of early detection of potentially hazardous asteroids. The NEO Surveyor mission, scheduled for launch in 2027, is designed to identify near-Earth objects that could pose a threat. If such an object is found, the ability to respond effectively will depend on having a complete plan in place, as the author notes that Bruce Willis will not be coming to save us. The research underscores the need for continued development in asteroid defense technology and the importance of preparedness for potential impacts.

AI-generated summary of the original article — see the source for the full story.