ExtremeTech: Introduced at the recent DEF CON hacker convention in Las Vegas, Firefly is a digital camera designed to be fired into the air by a grenade launcher and then descend by parachute, taking photos as it goes down. Its developers originally marketed it to the military to provide intelligence to soldiers on the ground. Although the military has already developed throwable camera balls and grenade-style cameras, Firefly is being presented as a less expensive option because it is manufactured from off-the-shelf components and can be fired by a flare gun instead of a grenade launcher. It could also possibly be used in civilian markets, such as by police and search-and-rescue workers to cover heavily wooded or otherwise inaccessible areas.
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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