Mira

noun Mi·ra \ ˈmī-rə \

Definition of Mira

astronomy
:a variable binary star system that is seen in the constellation Cetus
  • To see a star that varies intrinsically in brightness, we have to wait until late summer and fall. Mira, in the constellation Cetus the Whale, is the sky's best slowly varying red giant. Mira climbs from invisibility (at 9th magnitude) to 4th magnitude and then fades again roughly every 330 days.
  • —Alister LingAstronomyJanuary 1992
called also Omicron Ceti
Note: The star that we see when look at Mira is a variable red giant, the brightest of a binary pair of variable stars, and was one of the first variable stars identified by astronomers.

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First Known Use of mira

1831


Learn More about mira

  1. Spanish Central: Translation of Mira


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