BBC News: A prototype solar-powered plane has made its first full test flight - coming closer to the goal of using solar energy to fly around the world.The Solar Impulse, with a wingspan similar to that of a super-jumbo jet but weighing the same as a saloon car, took off from a Swiss airfield.The plane’s wings are covered by solar cells which power four electric motors.Its designers hope a slightly larger production model will circumnavigate the globe in two years’ time.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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