The Great
Wall

Redshift surveys have revealed the largest structures yet observed in the Universe. The prominent concentration of galaxies running diagonally across the northern (that is, upper) portion of the adjacent image has been termed the Great Wall. It appears that

Preliminary deep space redshift surveys along narrow pencils of direction indicate a periodic structure suggesting that there may be additional Great Wall type structures out there, but we have insufficient information at this point to map them extensively.


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