source: http://feedproxy.google.com/~r/SolarEnergyrssFeed/~3/ihgBJqiZ0ik/changing-how-solar-power-rolls.html
Traditional solar panels used to power satellites can be bulky with heavy panels folded together using mechanical hinges. An experiment that recently arrived at the International Space Station will test a new solar array design that rolls up to form a compact cylinder for launch with significantly less mass and volume.
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