Solar Impulse 2 on world tour now headed to Oklahoma

The Solar Impulse 2’s wings, which stretch wider than those of a Boeing 747, are equipped with 17,000 solar cells that power propellers and charge batteries.
A solar-powered airplane that landed in Arizona last week is headed to Oklahoma on the latest leg of its around-the-world journey.
The Swiss-made Solar Impulse 2 took off from Phoenix Goodyear Airport about 3 a.m. Thursday with a destination of Tulsa International Airport. It departed from northern California in the early hours of Ma