As space junk threat grows, government and investors seek solutions

A growing swarm of debris in space has led the U.S. government to attempt to set new space hygiene norms, while private companies are also investing in ways to tackle the messy orbital environment. Thousands of commercial satellites are being launched into Earth's orbit at a record pace, driving up the risk of collisions that could spawn swarms of hazardous debris. And with no set norms for military space behavior, some fear a potential space weapon attack that could generate far more debris. At stake are billions of dollars in assets - the orbital devices crucial to navigation and smartphone…