Wobbling galaxy contradicts dark-matter model

European scientists using the Hubble telescope to measure the visible centre of a galaxy, and comparing it with the gravitational centre, measured using its gravitational lensing effect, have found the two centres substantially offset. This is interpreted as a wobbling in the galaxy, post-merger, but after the local cluster had relaxed.

If dark matter is causing the wobble then it is not following the current model of dark matter. Otherwise there may be some new physics to explain the wobble.

Futurism article