We tend to think of space as vast and mostly empty, yet the region just above Earth is far from it. In this episode, we explore the surprising congestion of low Earth orbit, where tens of thousands of satellites and millions of pieces of debris are hurtling around at incredible speeds. From a major satellite collision in 2009 to the looming threat of the Kessler Effect — where Earth’s orbit becomes so densely packed that collisions set off an unstoppable chain reaction — we unpack how even tiny fragments can cause massive damage to spacecraft, disrupt critical services, and potentially put astronauts and even us Earth dwellers at risk. We talk with scientists about creative solutions that could help tackle this growing problem, including space lasers, and we ask an important question: who is responsible for keeping space clean?
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A transcript and references for this episode can be found at acs.org/tinymatters.
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