Astronomers Oliver Müller (Uni Basel) and Federico Lelli (ESO) explain our new study on the rotating plane of satellite galaxies around Centaurus A, published in Science on Feb. 2, 2018. Rotating planes of satellite galaxies have been found around the Milky Way, the Andromeda Galaxy, and now for the first time outside of the Local Group, around Centaurus A. These structures pose a serious challenge to ΛCDM – the standard model of cosmology based on the existence of cold dark matter – because cosmological simulations predict that similarly extreme structures should exist around only one in 200 or more galaxies.

Reference: "A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology", by Oliver Müller, Marcel S. Pawlowski, Helmut Jerjen & Federico Lelli, Science 359, 534–537 (2018)

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