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Re:EmDrive study officially published by Dylan16807 on Saturday November 19, 2016 @08:58PM (#12996859)
The mere existence of some kind of ether wouldn't disprove much, as far as I know. It wouldn't impact relativity any more than a swimming pool.
Re:EmDrive study officially published by aetherson on Monday November 21, 2016 @12:28PM (#13007145)
An ether that can be pushed against is an ether with mass. There's a sibling comment in this thread talking about dark matter as a candidate for an ether and the problems with such a concept.

An ether that can be pushed against is also an ether that has a frame of reference, and that frame of reference is unlikely to be one that is extremely favorable to use of the EMDrive as a drive.

An ether that is in some way massless or frame-of-reference-less but still can be pushed against is a fundamental rethinking of physics.