The Washington Post: Some 1,000 years ago, Viking sailors became Europe’s first great maritime explorers -- setting out for places unknown, not really understanding what they were finding, and often not returning home. It was a halting beginning to what later flowered when southern European powers sailed and colonized the globe and to what is now as unremarkable as a tanker of oil or a shipment of apples leaving home port for delivery halfway around the world.As Michael Griffin, the head of NASA, sees it, humanity is setting out on an interplanetary quest not dissimilar to what began with the Vikings. An age of space exploration has begun, but only with the same confused baby steps that brought Leif Eriksson briefly to Vinland and North America (or was it Greenland?).
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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