Comment:

Mira, first observed by German pastor David Fabricius (1564-1617), is a "variable" pulsating red giant star
about 400 light years away in the constellation Cetus.
Within a single year, it increases or decreases one hundred-fold,
reaching up to 700 times the size of the Sun.It has a white dwarf for a companion star.
Only recently, the Hubble Telescope documented, thatMira has a incredibly long,
"gargantuan, comet-like tail," measuring some fifteen light-years (about 45 trillion miles!)

L: AstroPic, entitled "Mira, the Wonderful"--  Chandra Observatory x-Ray image of Red Giant MiraA &White Dwarf companion Mira B.
R: Artist's rendering of both Miras.