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Hubble’s law
Hub·ble's law


noun 
Definition:
 
scientific law of galaxy speed: the law holding that the speed at which distant galaxies are moving away from Earth is proportional to their distance from the observer
[Mid-20th century. After Edwin Hubble]
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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