A solar-powered experimental airplane completed a 24-hour test flight last week. The flight took place overnight and was powered by energy collected from the sun during the day. According to The New York Times, the flight was the longest and highest solar-powered aircraft. It reached an altitude of more than 28,000 feet above sea level. The plane took off and landed in Payerne, Switzerland and was in the air for exactly 26 hours and nine minutes.
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