Researchers at Sandia National Laboratories successfully tested a novel method for deflecting asteroids using the Z machine, a powerful device capable of generating intense bursts of energy. The experiment involved using x-rays to vaporize material, creating a thrust that propelled small asteroid-like targets.
The Z machine, originally designed for nuclear fusion research, was repurposed for this experiment. A key innovation was the "x-ray scissors" technique, which utilizes thin aluminum foil to suspend the targets before vaporizing the foil and propelling the targets with x-rays.
Two fingernail-sized targets (quartz and fused silica) were successfully propelled at 160 mph. The experiment confirmed the feasibility of using a nuclear blast to move an object in space.
This successful demonstration is significant as it offers a viable and scientifically proven approach for planetary defense. The experiment's results have been lauded by other physicists in the field, highlighting the elegance and success of the "x-ray scissors" technique.