Solar Impulse aircraft successfully completes its first night flight

The Solar Impulse aircraft, which is powered only by solar energy, has triumphantly completed its first night flight. The ultralight aircraft was airborne for a total of 26 hours - from 7 am on July 7th until 9 am the following day (Central European Time) - before finally landing as planned at Payerne airbase in Switzerland. It is now officially the first manned aircraft capable of...

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