The Solar Impulse HB-SIA solar airplane we first reported about back in April flew a successful test flight yesterday.
After a 15 hour day flight the Solar Impulse HB-SIA also successfully finished a night flight thanks to the lithium batteries in the solar plane.
The Solar Impulse has a massive 12,000 solar cells built into its wings.
The ultimate goal of the Solar Impulse project is to fly around the world with solar power.
More details on the Solar Impulse site.
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