Space junk is not going away anytime soon—and neither are the troubles it causes. We’re poised to see more satellite launches with just about every passing year, which suggests additional pieces of rocketry and spacecraft finding loose and zipping about at more than 22,000 mph.
At these speeds, even an object just a couple of centimeters extended could immediately destroy a satellite, and send even additional debris hurtling by means of space. How do you deal with this? You can use potent lasers to measure the distance of these objects, like radar or sonar.