HUBBLE ATLAS
Red Giant Star Mira (Mira A, Omicron Ceti) — image from the Hubble Space Telescope

Stars

Red Giant Star Mira

August 6, 1997 · NASA · Mira A, Omicron Ceti

Zoom to full resolution Original on NASA ↗

In UV light, Hubble resolves a small hook-like appendage extending from Mira, in the direction of the companion that could be material from Mira being gravitationally drawn toward the smaller star. Alternately, it could be that material in Mira's upper atmosphere is being heated due to the companion's presence.