The Spacefaring Civilisation

Solar Sailing - "sunjammers"

Catching the tides of sunlight.

Huge freighters with their cargoes of ore and gas
fly back to Earth using the pressure of the
solar wind on mile-wide sails.

"Saw the heavens fill with commerce, argosies of magic sails,
Pilots of the purple twilight, dropping down with costly bales,"
Alfred Lord Tennyson ("Locksley Hall")

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Image Copyright Julian Baum