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  • In astronomy, an enormous unit equaling 109 light years, or 9.4605 x 1021 kilometers (9.4605 yottameters), 5.8785 sextillion miles (U.S.), 63.240 x 1012 astronomical units, or 306.595 megaparsecs. Most astronomers use the megaparsec instead of the hubble.

    November 6, 2007

  • It is enormous in earthly terms, not in economical terms.

    November 7, 2007