A solar powered airplane "Solar Impulse" is seen during a flight to Paris from Brussels Airport, in Zaventem, June 14, 2011. This is the second International flight for the plane, operating fully on solar energy. Solar Impulse had to return to Brussels after a first failed attempt to fly from Brussels to Paris last Saturday. Over the weekend, the batteries of the plane were charged by plugging the plane in to the power network. The Swiss solar-powered aircraft is special guest at the upcoming International Paris Air Show at Le Bourget near Paris, France. [Photo/CFP]