Solar Impulse 2, the solar airplane of Swiss pioneers Bertrand Piccard and Ande Borschberg, in preparation for the take off from Tulsa International Airport, Oklahoma on Saturday.
Solar Impulse 2 pilots Bertrand Piccard (right) and Andre Borschberg celebrate after Piccard landed their solar-powered plane at Moffett Field in Mountain View, Calif., on Saturday.
The Solar Impulse 2 airplane, piloted by Bertrand Piccard, gains altitude after taking off from Kalaeloa Airport in Kapolei, Hawaii during a test and training flight in April.
Eugene Tanner /AFP/Getty Images
The Solar Impulse 2 landed in Hawaii in early July. The team behind the sun-powered airplane says it will be grounded until next spring.
Solar Impulse | Revillard | Rezo/Solar Impulse | Revillard | Rezo
Pilot André Borschberg sent this photo of his flight over Japan; he's now over the Pacific Ocean, heading to Hawaii. He's not expected to land until Friday morning, Eastern time.
Pilot Andre Borschberg of Switzerland sits aboard the Solar Impulse as a ground crew pushes the plane at the airport in Nagoya, Japan, prior to taking off for Hawaii.
Toshifumi Kitamura/AFP/Getty Images
The Solar Impulse takes off from Moffett Field NASA Ames Research Center in Mountain View, Calif., Friday, as a team member rides an electric bike alongside the plane.