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Galapagos tortoise
Galatea
galatea
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galaxy cluster
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galaxy cluster
gal·ax·y clus·ter (plural gal·ax·y clus·ters)


noun 
Definition:
 
group of galaxies: a group of galaxies associated by mutual gravitational attraction
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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