Originally shared by David Brin
See a cool video about the Planetary Society’s Project Light sail, that will expand from a mere bread loaf cube-sat to 32 square meters and launch humanity (at last!) into the era of interplanetary sailing.
http://www.planetary.org/multimedia/video/scitech/lightsail-2-animation.html
http://www.planetary.org/multimedia/video/scitech/lightsail-2-animation.html
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