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dwarf spheroidal galaxy
(redirected from Dwarf spheroidal galaxies)

    Also found in: Wikipedia 0.01 sec.
dwarf spheroidal galaxy [¦dwȯrf sfir¦ȯid·əl ′gal·ik·sē]
(astronomy)
One of the smallest and faintest of the dwarf galaxies, with an effective radius of 200-1000 parsecs and an absolute visual magnitude between -8 and -13.
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Dwarf spheroidal galaxies appear to be made mostly of dark matter - a mysterious substance detectable only by its gravitational influence, which outweighs normal matter by a factor of five to one in the universe as a whole.
Dancing helps galaxies lose weight! by Asian News International
 
 
 
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