Pi1 Gruis

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Pi1 Gruis is a red supergiant star. It bubbles violently on its surface.[1] As a red supergiant star, it is similar to Mu Cephei, Betelgeuse, and Antares.

References[change | change source]

  1. information@eso.org. "Giant Bubbles on Red Giant Star's Surface". www.eso.org.