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Astronomy Picture from 27/06/1999

COBE Dipole: Speeding Through the Universe

Source: https://apod.nasa.gov/apod/ap990627.htm<a href="/hashtag/CosmicMotion" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#CosmicMotioni#GalaxySpeeda#RedshiftBlueshiftl#CMBDipoleM#UniverseExpansionx#Astrophysicso#Cosmologyo#SpaceExplorationl#MilkyWayM#LocalGroupcalGroup
All-sky map showing the Cosmic Microwave Background (CMB) dipole anisotropy. The colors represent temperature variations caused by the motion of our Local Group of galaxies relative to the CMB at 600 km/s. Blueshifted (hotter) radiation is in the direction of motion, redshifted (colder) in the opposite direction. This high speed and its cause remain unexplained.
May 22, 2025 at 11:14 PM