See also: MACs, Macs, macs, and mačs

English

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Proper noun

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MACS

  1. (astronomy) Abbreviation of MAssive Cluster Survey. A survey for a statistically complete sample of distant (0.7>z>0.3) very X-ray luminous massive clusters of galaxies (galaxy clusters), culled from the ROSAT Bright Source Catalogue of X-ray sources
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