Deep space voids. Uneven (anisotropic) densities in the fabric of space time due to tiny quantum fluctuations right after the Big Bang were enlarged as the universe expanded. Areas where initial quantum fluctuations were great became the nucleation sites of galactic super clusters. Other areas became cold voids where there is a lack of matter. These initial fluctuations can be mapped onto the cosmic microwave background radiation - the leftover low temperature signature of the Big Bang - and can be used to map voids in the universe that exist between large galactic filaments. . Credit: NASA/ESA/EHallman / public domain, NASA/WMAP Science Team / public domain, ESO / CC BY-SA 4.0 and ANeutron / CC BY-SA 4.0. . #astronomy #astrophysics #darkmatter #cosmicbackgroundradiation #universe #galaxies #deepspace #thegreatvoid #galacticfilaments #nasa🚀 #NASA #europeanspaceagency https://www.instagram.com/p/BxcvSV3hrGd/?utm_source=ig_tumblr_share&igshid=ko8q9jlo8p0a
