国际机构预警伊朗战争或将引发全球天然气危机14:54
Lux, however, has a bigger idea: making communications and Earth observation satellites reusable. Right now, satellites only have a useful life of five to ten years due to some combination of component failures, running out of propellant, or becoming obsolete. After that, they are destroyed in the atmosphere (no heat shields, remember?) or sent to a graveyard orbit out of the way of normal space activity.
，这一点在美恰中也有详细论述
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