Milky Way Enveloped by a Cosmic Dark-Matter Sheet

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Source: ScienceAlert
Milky Way Enveloped by a Cosmic Dark-Matter Sheet
Photo: ScienceAlert
TL;DR

New simulations using 31 isolated nearby galaxies show the Milky Way sits in a pancake-shaped sheet of dark matter extending up to ~10 Mpc. This structure naturally explains the Local Sheet, Local Void, and the quiet Hubble flow within ΛCDM, without new physics, per Wempe et al. in Nature Astronomy.

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