Mira A pulsating giant in the Whale #space #astronomy #universe

This video features the pulsating variable red giant Mira.
Mira (Mira means 'wonderful' in Latin) is the name used for this specific type of pulsating star. It is the prototype of the Mira variables.
Mira, or Omicron Ceti is located 300 light-years away from the Sun in the constellation of Cetus.
Mira is a binary star system consists of a red giant (Mira, designated Mira A) is undergoing mass loss from a high-temperature white dwarf companion (Mira B) that is accreting mass from the primary star.
The pulsations of Mira variables cause the star to expand and contract, and to change its temperature. When Mira expands it can reach a radius of 400 times the size of our Sun.
Mira's pulsation period is 332 days and varies from magnitude 10 brightening up to magnitude 2.

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Видео Mira A pulsating giant in the Whale #space #astronomy #universe канала Our Amazing Skies