hip-25194

Its story

In small Columba, in the southern sky, beats a red star at 650 light-years. Its light departed around 1376, when the Western Schism was dividing Christendom and Castile was going through turbulent royal minorities. It is a class M variable, with a surface below 4,000 K and a brightness that fluctuates with the rhythm of internal pulsations. Each change in magnitude is a slow heartbeat of its atmosphere, audible only in the language of light.