Power of the sun: Solar Impulse's engines are powered solely by energy collected from more than 17,000 solar cells in its wing.
An airplane powered by energy from the sun arrived on Wednesday in Egypt, the penultimate stop on the first fuel-free flight around the globe.
Solar Impulse 2, a spindly single-seat plane, flew over the Pyramids to make a smooth landing at Cairo airport at about 7.10 am (1pm Malaysian time), ending a flight leg that lasted 48 hours and 50 minutes.
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