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LSST_Halo_2.jpg

representation of LSST halo mass
Halos of greater mass are shown as spheres – captured here are ~1,000 of heaviest halos – and colored by mass, where red indicates more massive halos, and smaller halos are represented by blue Gaussian density “splats.” (Visualization: Silvio H.R. Rizzi, Argonne National Laboratory)