| http://www.w3.org/ns/prov#value | - last 8 billion years, nearly half of the age of the universe.According to the research, the relationship between a galaxy's mass and a new speed indicator that measures movement of its stars and gas remains the same for all forms of galaxies, from spirals like our own Milky Way, to elliptical galaxies, and even the so-called train wrecks" left over by galactic mergers.
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