The U.S. Department of Defense has developed a bullet that can change direction in mid-air to ensure it hits its targets.

Called the Extreme Accuracy Tasked Ordnance (or EXACTO), the .50 caliber bullet is meant for use in combat in areas such as Afghanistan, where visibility and changes in wind and weather can throw bullets slightly off their course, according to an article in Popular Science.



How the ammunition works is, of course, secret. A video put out by DARPA shows the bullet adjusting its trajectory to hit a moving robot target.



Read MoreIndia is no longer the world's biggest arms importer

"This live-fire demonstration from a standard rifle showed that EXACTO is able to hit moving and evading targets with extreme accuracy at sniper ranges unachievable with traditional rounds," said DARPA program manager Jerome Dunn, in a statement. "Fitting EXACTO's guidance capabilities into a small .50-caliber size is a major breakthrough and opens the door to what could be possible in future guided projectiles across all calibers."



Read the full article in Popular Science here.