Could Nuclear Weapons Save Us From a Catastrophic Asteroid?

It’s paradoxical that the deadliest weapons ever created by humanity—nuclear bombs—could potentially save us from a disaster of cosmic proportions.

The idea of using nukes to stop a world-ending asteroid might immediately bring to mind scenes from the movie Armageddon, where oil rig workers drill into an asteroid and detonate a nuclear device to avert Earth’s destruction.

However, real-world science doesn’t follow the same script. Blowing up an asteroid or even detonating a nuke on its surface would likely cause more harm than good. The resulting debris could still hit Earth, only now in smaller, yet still destructive pieces, potentially worsening the catastrophe.

Yet, nuclear weapons may still offer a solution—just not in the way Hollywood imagines.

Recent experiments conducted by physicists at Sandia National Laboratories explored an alternative. Instead of blowing up the asteroid, they tested the idea of directing a massive pulse of radiation from a nuclear explosion at it.

If timed perfectly, the heat generated could vaporize part of the asteroid’s surface, causing enough force to alter its trajectory, nudging it away from Earth.

This theoretical method, though promising, has yet to be tested on an actual asteroid, leaving the question of its feasibility unanswered.

“Asteroid impacts are among the many natural hazards facing civilization,” the scientists noted in their study.

“Although most asteroids bypass the Earth or cause little damage, the largest collisions have led to regional devastation and even the elimination of habitable climates.”

Given the existential threat these rare but devastating events pose, eliminating the risk of catastrophic asteroid impacts has become a national priority.