First communications satellites were just passive reflectors. They were just big... | Hacker News

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nabla9 on Oct 11, 2021 | parent | context | favorite | on: Solar-powered aircraft flown for nearly three week...

First communications satellites were just passive reflectors. They were just big inflated balloons made with reflective material.

Same idea could work with solar powered aircraft.

https://en.wikipedia.org/wiki/PAGEOS

https://en.wikipedia.org/wiki/Project_Echo

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