Is it possible to build a world-class air force on engines that crack, stall, and occasionally threaten to self-destruct mid-flight? For decades, China’s answer seemed to be a reluctant yes until a ...

Five years ago, in 2021, American space agency NASA announced it is working on yet another project that doesn’t involve, well, space: the Hybrid Thermally Efficient Core (HyTEC). Since then, NASA’s ...