Literally in that same article they says it's hugely skeptical of the basic laws of momentum conservation and lacking of experimental accuracy. It's taking them 4+ attempts to get a standard propellant spacecraft off the ground these days, even though we've had that for 60+ years. Maybe in 750 years or so we'll have this lol
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Did they teach you this at your outdated Physics lecture?
https://www.msn.com/en-us/news/technology/nasa-engineer-creates-propulsion-system-that-defies-the-laws-of-physics/ar-AA1o3vhc?ocid=winp2fptaskbar&cvid=debfe1731f444bd98b03eb7f97ccced1&ei=9&sc=shoreline