Group of galaxies
A concentration of galaxies held together by gravitation. The term 'group' usually refers to small concentrations of a few dozen galaxies, while 'cluster' is used for larger concentrations.
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Fibrate
Z-Machine
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Papaya
Homo
S/PDIF
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Biome
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VIRTIS
Vertebrate
Grey poplar
Lambda phage
Peritonitis
Kilo base
Jason
Phobos-Grunt
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A concentration of galaxies held together by gravitation. The term 'group' usually refers to small concentrations of a few dozen galaxies, while 'cluster' is used for larger concentrations.
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