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Hydrogen-powered air taxi completes 523-mile test

Joby Aviation says its electric vertical takeoff and landing (eVTOL) aircraft successfully completed a 523-mile test flight, powered by hydrogen. The only byproduct from the prototype, which has a liquid hydrogen fuel cell and hydrogen-electric propulsion system, was water vapor.…

Light-speed radar can track multiple Mach-20 missiles

China has just made another move on the hypersonic missile war game board. An incredibly accurate laser-based radar system has been announced that would be able to track objects ripping through the sky at over four miles per second. The…