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")
Next in The Spacefaring Civilisation
Image Copyright Julian Baum