“To be clear, our finding is not a warp bubble analog, it is a real, albeit humble and tiny, warp bubble,” explains Dr. Harold G. “Sonny” White, the head of NASA’s Advanced Propulsion Team. “Hence the significance.” Dr. White is no stranger to the concepts of alternative forms of spacecraft propulsion, having worked on refining the mathematics underlying the theoretical Alcubierre drive, and having led NASA’s successful real-world testing of the controversial EmDrive, a reaction-less engine that uses only microwaves to produce thrust.

https://www.unknowncountry.com/headline-news/the-worlds-first-warp-bubble-has-been-created-by-darpa-funded-scientists-by-accident/