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Text File  |  1995-11-04  |  210b  |  9 lines
  1. RR Lyrae variable: A type of variable
  2. star. Although the periodicity of RR
  3. Lyrae may range from a few hours to
  4. a day, they all have approximately
  5. the same luminosity, about 100 times
  6. that of our Sun.
  7.  
  8.  
  9.