  APS/ Alan Stonebraker Figure 0: Bounds on the fuzzy dark matter (FDM) scenario: Lower bounds come from large scale galactic structure observations (green) and measurements of high redshift galaxies and density fluctuations in the intergalactic medium (blue). A new limit at the higher end of the FDM mass range has been obtained from observations of the supermassive black hole M00* (pink). Bounds on the fuzzy dark matter (FDM) scenario: Lower bounds come from large scale galactic structure observations (green) and measurements of high redshift galaxies and density fluctuations in the intergalactic medium (blue). A new limit at the high