The experimental aircraft "Solar Impulse" takes off for its first international flight to Brussels at the airbase in Payerne, Switzerland, Friday, May 13, 2011. The single-seater prototype took off ... more 
The experimental aircraft "Solar Impulse" takes off for its first international flight to Brussels at the airbase in Payerne, Switzerland, Friday, May 13, 2011. The single-seater prototype took off Friday morning and is expected to reach Brussels airport by nightfall. The solar-powered plane with the wingspan of a Boeing 777 made its 2009 maiden flight in Switzerland and further tests have all taken place there. less 
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Associated Press | Photo By Keystone, Laurent Gillieron
Fri, May 13, 2011 4:28 AM EDT