Cih

Its story

Cih, gamma Cassiopeiae, is a blue variable star pulsing at the centre of the celestial W, one of the most recognisable silhouettes of the northern hemisphere. Her brightness shifts unpredictably through eruptive episodes in her equatorial gas disk. Her light, launched 549 years ago in the era of Joan of Arc, embodies the restlessness of Queen Cassiopeia chained eternally to her cosmic throne.