The Ghosts of Cassiopeia, also known as IC 63, is a faint, ethereal nebula located approximately 550 light-years away in the constellation Cassiopeia. This nebula is illuminated and sculpted by the nearby blue supergiant star Gamma Cassiopeiae, which is a variable star more than 34,000 times as luminous as the Sun. The intense radiation from Gamma Cassiopeiae causes the hydrogen gas in the nebula to glow red, while its ultraviolet radiation sculpts and slowly erodes the nebula over time.

Interestingly, IC 63 is part of a larger complex of nebulosity surrounding Gamma Cassiopeiae, making it a fascinating target for both astrophotography and scientific study of star-forming regions.