satellites
Joshua Morris (opens on the publisher’s site)
joshuamorris.info
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Atmosphere-breathing propulsion would let a low satellite use the air dragging it down as propellant, so flying closer to Earth can stay practical.
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IEEE Spectrum on satellite reentry particles lingering aloft—arguing “burn up” often relocates debris into the upper atmosphere, so constellation growth needs the full environmental cost of coming home counted, not just orbit risk.
