The solar powered aircraft Solar Impulse (HB-SIA prototype) steered by test pilot Markus Scherdel takes off during its maiden flight at the military airport in Payerne, Switzerland on April 7, 2010. [Photo/Chinanews.com]
The solar powered aircraft Solar Impulse (HB-SIA prototype) steered by test pilot Markus Scherdel is airborne during its maiden flight at the military airport in Payerne, Switzerland on April 7, 2010. [Photo/chinanews.com]