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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

One million units of astronomical length each of which is equal to 3.26 light-years.

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Usage examples (11)
  • The project I was running was designed to extract this information for all the galaxies in a many cubic megaparsec volume of the local Universe.
  • Currently, most astronomers agree that the value of the Hubble constant is about 71 kilometers per second per megaparsec a megaparsec is 3.2 million light-years.
  • The expansion rate became known as the Hubble constant; Hubble thought it was 500 kilometers per second every 3.26 million light-years, that is, every megaparsec.
  • Therefore, since the curvature of the universe is essentially set by its expansion rate, the expansion rate of the universe determines how far away assuming special relativity...
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We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.