Don't Get Too Excited About NASA's New Miracle Engine
I had a hunch that the write ups of the NASA apparent confirmation of a reactionless drive were being a bit too enthusiastic. This article indicates my skepticism may be well founded.
And one other point: the thrust the test measured was absolutely tiny. Even if a totally new effect is at play, I wouldn't get too excited unless it was clearly scale-able to something useful. Weird (but tiny) force effects of the quantum world already exist - see the Casimir effect - but as far as I know there is no proposal to ever make use of that for colonising the universe.
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