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   Hubble's law
   Hubble's law, in astronomy, statement that the distances between galaxies (see galaxy) or clusters of galaxies are continuously increasing and that therefore the universe is expanding.Sections in this article:IntroductionDiscovery and Explanation of the Red ShiftRelative Motion of the GalaxiesBiblio...
   Found op http://www.infoplease.com/ce6/sci/A0824421.html
   
   
2. 
   Hubble's law
   Law that relates a galaxy's distance from us to its speed of recession as the universe expands, formulated in 1929 by US astronomer Edwin Hubble. He found that galaxies are moving apart at speeds that increase in direct proportion to their distance apart. The rate of expansion is known as the Hubble...
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0031327.html
   
   
3. 
   Hubble's Law
   The law of physics that states that the farther a galaxy is from us, the faster it is moving away from us.
   Found op http://www.seasky.org/astronomy/astronomy-glossary.html
   
   

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