NGC 6888. CALDWELL 27

Click here for full resolution image NGC 6888 is, in many ways, an unusual nebula. It is the result of the evolution of its central star HD 192163 (also known as WR 136, because it is a Wolf Rayet star). It started (about 5 Million years ago) as a supergiant O star, with a mass … Continue reading NGC 6888. CALDWELL 27