[jacquesm]

If you think of 'Aether as a possible medium that we haven't discovered yet and that may not exist' then you wouldn't be too far off. The difference between that and pseudo-science is obvious: the existence of Aether can be proven (or disproven), the typical pseudo-science stays very far away from naming any testable hypothesis and instead focuses on how the proponents of pseudo-science are being repressed. But let me point you to a youtube link that will lay it all out in great detail...