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Wednesday, February 16, 2005

U Geminorum Star

Any of a class of irregular variable stars that display sudden increases in brightness so great that they are sometimes called dwarf novae. Some have been observed to brighten by as much as 5 magnitudes (100 times) in a period of hours. The prototype star, U Geminorum, brightens by as much as 4 magnitudes (about 40 times) in a few days, declining again to normal brightness in two or

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