"The experimental plane called Solar Impulse 2 has taken off in Hawaii after a nine-month delay for repairs.
The team on the ground and at mission control let out exuberant cheers as the cutting-edge aircraft rose up into the early morning skies.
They're aiming to circumnavigate the globe using only the power of the sun."
Merrit Kennedy reports for NPR April 21, 2016.
Source: NPR, 04/22/2016
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