RR LYRAE STAR


Meaning of RR LYRAE STAR in English

Astron. one of a group of pulsating variable stars found in the halo of the Milky Way, with periods between 1.2 and 30 hours; all have approximately the same luminosity and are therefore used for measuring distances. Also called cluster variable .

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Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .