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Ursa Major cluster

   Also found in: Wikipedia 0.03 sec.
Ursa Major cluster [′ər·sə ′mā·jər ‚kləs·tər]
(astronomy)
An open cluster of stars, including 5 bright stars of the constellation Ursa Major, centered about 75 light-years from the sun and spread over a volume of 30 light-years length and 18-light-years width.
A cluster of galaxies in the constellation Ursa Major having a redshift of about 0.051.


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