Space debris: Where does it come from, and what can we do about it?

Space debris: Where does it come from, and what can we do about it?:

Orbital debris is (nearly) forever, and threatens to render near-Earth space unusable, and all but impassible. The 2007 Chinese anti-satellite test and an accidental collision between two communications satellites in 2009 highlighted the need to study orbital collisions of modern satellites. The NASA Standard Breakup Model, based on hypervelocity collision studies of 1960s-era satellites, fails to accurately describe collisions of modern satellites, owing to advances made in materials and construction. To address this problem, NASA is updating the SBM by building and destroying a modern dummy satellite called DebriSat...
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