REFERENCES
http://www.atnf.csiro.au/outreach/education/senior/cosmicengine/hubble.html#hubblelaw
http://en.wikipedia.org/wiki/Hubble%27s_law
http://en.wikipedia.org/wiki/Aristotle%27s_theory_of_universals
http://en.wikipedia.org/wiki/Copernican_heliocentrism
http://en.wikipedia.org/wiki/Hubble%27s_law
http://en.wikipedia.org/wiki/Aristotle%27s_theory_of_universals
http://en.wikipedia.org/wiki/Copernican_heliocentrism