RR Lyrae:

RR Lyrae: see variable star.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

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variable star - variable star variable star, star that varies, either periodically or irregularly, in the intensity ...
variable star: Intrinsic Variable Stars - Intrinsic Variable Stars Pulsating Variables Pulsating variables account for more than half of the ...
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