NASA OIG: NASA's Efforts to Mitigate the Risks Posed by Orbital Debris, OIG
"Despite presidential and congressional directives to NASA over the past decade to develop active debris removal technologies, the Agency has made little to no progress on such efforts. Moreover, debris removal technologies from international agencies and commercial entities are in the early stages of development and testing. ... We found that NASA models of the orbital debris environment lack sufficient data, putting the Agency at risk of under- or over-protecting spacecraft from debris."
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