BBC: The US Defense Advanced Research Projects Agency (DARPA) has released video of a four-legged robot designed to move like fast-running animals in the wild. Called Cheetah, the robot will be able to “more effectively assist war fighters across a greater range of missions,” according to DARPA. The machine, which can flex its back to increase the length of its stride, is the fastest legged robot so far, having clocked speeds up to 29 kilometers per hour. Although the current model must be connected to an off-board hydraulic pump, a free-running prototype is planned for later this year.
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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