A plane that runs on 17,000 solar cells made its inaugural flight today in Switzerland, BBC reports. Dubbed Solar Impulse 2, the vehicle is the first in history that can soar day and night without a single drop of fuel. With a massive wingspan of 72 meters, the plane weighs 2.3 metric tons and consumes low amounts of power, allowing it to fly through the night with solar energy that’s stored up during the daytime in lithium batteries. The craft is scheduled for a trip around the world next year.
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