All-sky map of the Cosmic Microwave Background (CMB) showing the dipole anisotropy caused by the motion of the Local Group of galaxies relative to the CMB rest frame. The blueshifted (hotter) region indicates the direction of motion, while the redshifted (colder) region is opposite. This map reveals our Local Group is moving at ~600 km/s, a speed whose cause remains a mystery.
Astronomy Picture from 27/06/1999
COBE Dipole: Speeding Through the Universe
Source: https://apod.nasa.gov/apod/ap990627.html
#CosmicMotion #RedshiftBlueshift #MilkyWayMotion #VirgoCluster #CMBDipole #Astronomy #Cosmology #SpaceExploration #Universe
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