Washington Post: Last February, two communications satellites, the Russian Kosmos-2251 and the US Iridium-33, accidentally smashed into each other. In January 2007, a Chinese antimissile kill vehicle deliberately destroyed Fengyun-1C, a Chinese weather satellite. These and other incidents have strewn space junk in low Earth orbit, worrying the US Department of Defense, which included the threat in its latest US Space Posture Review.
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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