What is not fully known is whether this observation is evidence of a rhythmic expansion and contraction of the star's photosphere as astronomers have theorized, and if so, what the periodic cycle might be, although Townes suggested that if a cycle does exist, it is probably a few decades long.
Co není zcela známo, je, zda jsou tato pozorování i důkazem rytmických expanzí a kontrakcí hvězdy, jak se astronomové domnívali, a pokud ano, jak pravidelné cykly by to mohly být.