BBC: Yesterday a solar-powered aircraft completed its first intercontinental flight, flying from Madrid, Spain, to Rabat, Morocco, in just 19 hours. The Solar Impulse is the brainchild of Bertrand Piccard, a Swiss psychiatrist and balloonist, and André Boschberg, a Swiss businessman and pilot. The size of a jumbo jet, it is powered by 12 000 solar cells and propelled by four electrical motors. In 2010 the aircraft became the first manned solar plane to fly 26 hours nonstop. The two pilots hope to fly around the world in 2014.
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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