People stand around he new experimental aircraft "Solar Impulse 2" during the first exit for solar generator tests at the airbase in Payerne, Switzerland, Monday, April 14, 2014. The aircraft is the ... more 
People stand around he new experimental aircraft "Solar Impulse 2" during the first exit for solar generator tests at the airbase in Payerne, Switzerland, Monday, April 14, 2014. The aircraft is the second solar plane of the Solar Impulse project. The main goal of the project is to circumnavigate the world with an aircraft, with a 72 metres wingspan, powered only by solar energy. (AP Photo/Keystone, Laurent Gillieron) less 
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Associated Press | Photo By Keystone, Laurent Gillieron
Mon, Apr 14, 2014 5:24 AM EDT