The scientists were already investigating the problem of pollution from space debris when they realised a SpaceX Falcon 9 had failed in flight.
{ 42, 56, 62, 52, 23, 7, 5, 17 },
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Наука и техника
The Electronic Frontier Foundation (EFF) eff.org🇺🇸
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其中 λ≈1.05，α≈1.67。