Summary:

- The article discusses the potential use of nuclear weapons to deflect or destroy asteroids that pose a threat to Earth. It highlights a recent study that suggests using X-rays from a nuclear explosion could be an effective way to alter an asteroid's trajectory without shattering it.

- The study, conducted by researchers at the University of Colorado Boulder, simulated the effects of using a nuclear device to vaporize the surface of an asteroid, creating a thrust that could push it off course. This approach is considered less risky than directly detonating a nuclear weapon on the asteroid, which could break it into smaller, potentially more dangerous fragments.

- The article notes that while the X-ray approach is promising, significant challenges remain, such as the need for precise targeting and the potential for unintended consequences. Further research and testing are necessary before this method could be considered a viable option for planetary defense against asteroid threats.