Red Giant Star Mira's Football Shape

Red Giant Star Mira's Football Shape

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Fast Facts
News release ID: STScI-1997-26
Release Date: Aug 6, 1997
Image Use: Copyright
About this image

Hubble's visible-light image of the disk of Mira reveals it has an odd, asymmetrical shape resembling a football. This may be tied to dramatic changes occurring during its expansion-contraction cycles, or to the presence of unresolved spots on its surface. Hubble measurements show the red giant star is 700 times larger than our Sun.

Multiple Star Systems, Observations, Stars


Credit: Margarita Karovska (Harvard-Smithsonian Center for Astrophysics) and NASA