Another Dark Matter Particle Model Fail And Other Gravity Papers

Another (fairly byzantine) self-interacting dark matter particle model fails to reproduce the empirically observed baryonic Tully-Fischer relation, which MOND and several other gravity based explanations for dark matter phenomena naturally produce. 

This is a generic problem with the lion's share of all dark matter particle models that do not have ultralight bosons with masses of the same order of magnitude as the mass-energy of hypothetical typical gravitons as their dark matter particles.

But, some geometrical gravity based explanations of dark matter and dark energy phenomena have their own deep problems.

More optimistically, a new, theoretically observable and well-defined quantity to determine if gravity is quantum or classical in nature in future observations has been devised.