RY Sagittarii
... that the star RY Sagittarii is periodically dimmed by clouds of carbon dust most likely ejected by the star itself?
... that the star <b id="mwAWk"><a href="./RY_Sagittarii" id="mwAWo" rel="mw:WikiLink" title="RY Sagittarii">RY Sagittarii</a></b> is periodically dimmed by clouds of carbon dust most likely ejected by the star itself?