New Observations Disfavor Fuzzy Dark Matter

Observations of the absorption of photons by neutral hydrogen in deep space strongly disfavor a new dark matter theory called "Fuzzy Dark Matter" while being consistent with the Cold Dark Matter hypothesis (that is itself disfavored by smaller scale structure observations by astronomers). 

In the Fuzzy Dark Matter (FDM) model, dark matter is deemed composed of ultralight bosons provided with a non-negligible pressure at small scales, and  dark matter has higher particle velocities than it does in cold dark matter (CDM) models. FDM models overlap with Axion Dark Matter models.