New research suggests that a nuclear explosion could deflect an asteroid on a collision course with Earth, but the outcome may hinge on which side of the object is struck. Scientists studying the effects of X-ray blasts on irregularly shaped asteroids found that deflection effectiveness can vary nearly fivefold depending on the angle of the detonation, according to the study. The findings underscore the complexity of planetary defense missions, where an asteroid's uneven geometry and composition can dramatically alter how it responds to a nuclear strike.
The research highlights a critical catch for any future deflection effort: striking the wrong side of an asteroid could mean the difference between a successful push away from Earth and a failed or even counterproductive outcome. The study adds to a growing body of work on asteroid mitigation strategies, including NASA's recent kinetic impact test, as space agencies assess options for guarding against potentially hazardous near-Earth objects. Scientists caution that any nuclear deflection scenario would require detailed reconnaissance of a target asteroid's shape and spin before an intercept attempt.
Independent reporting synthesized from primary wires and global correspondents.