Humans generate a lot of junk here on Earth, it’s true. But in space — the final frontier — the junk is spinning out of control, so much so that it could endanger the future of space travel. The hazards generated by colliding space junk — dead satellites bashing into each other to create tinier and tinier particles — fascinated Don Kessler, aka “the father of space junk” and the now-retired director of NASA’s Orbital Debris Program. His so-called Kessler Syndrome theory pioneered the idea that the expanding ring of debris clouds orbiting the earth might eventually become impassable, and inspired the new... More >>>