[roywiggins]

The most recent research suggests the thrust was real, sort of, but not a reactionless effect.

> And now it seems that the previously detected thrust was illusory, at least according to a team of researchers in Germany. They built their own EmDrive and tested it in a vacuum chamber, as the NASA researchers did.

> The German team picked something up as well. But follow-up analysis "clearly indicates that the 'thrust' is not coming from the EmDrive but from some electromagnetic interaction," the researchers wrote in their new study, which you can read here. That interaction is likely between EmDrive power cables and Earth's magnetic field, the team concluded.

https://www.space.com/40682-em-drive-impossible-space-thrust...